diff --git a/IMPLEMENTATION_SUMMARY.md b/IMPLEMENTATION_SUMMARY.md
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+# Batch Transactions Implementation Summary
+
+## Overview
+
+Successfully implemented prelive-only batch transaction endpoints for the Zai Payment Ruby gem. These endpoints allow testing and simulation of batch transaction processing flows in the prelive environment.
+
+## Files Created
+
+### 1. Resource Implementation
+**File:** `lib/zai_payment/resources/batch_transaction.rb`
+
+Implements the `BatchTransaction` resource class with the following methods:
+- `export_transactions` - Exports pending batch transactions to batched state
+- `update_transaction_states` - Updates batch transaction states (12700 or 12000)
+- `process_to_bank_processing` - Convenience method for state 12700
+- `process_to_successful` - Convenience method for state 12000 (triggers webhooks)
+
+**Key Features:**
+- Environment validation (prelive-only)
+- Comprehensive parameter validation
+- Clear error messages
+- Full YARD documentation
+
+### 2. Spec File
+**File:** `spec/zai_payment/resources/batch_transaction_spec.rb`
+
+Comprehensive test coverage including:
+- Export transactions functionality
+- Update transaction states with both state codes
+- Convenience methods (process_to_bank_processing, process_to_successful)
+- Environment validation (prelive vs production)
+- Parameter validation for all methods
+- Multiple transaction ID handling
+- Integration with ZaiPayment module
+
+### 3. Documentation
+
+#### Examples
+**File:** `examples/batch_transactions.md`
+- Complete workflow examples
+- Step-by-step usage guide
+- Error handling examples
+- Multiple transaction processing
+- Webhook testing guide
+
+#### Technical Documentation
+**File:** `docs/batch_transactions.md`
+- Complete method reference with signatures
+- Parameter descriptions and types
+- Return value specifications
+- Error handling details
+- State code documentation
+- Lifecycle diagrams
+- Integration examples
+
+## Files Modified
+
+### 1. Main Module
+**File:** `lib/zai_payment.rb`
+- Added require for batch_transaction resource
+- Added `batch_transactions` accessor method
+
+### 2. Response Class
+**File:** `lib/zai_payment/response.rb`
+- Added "batches" to RESPONSE_DATA_KEYS array
+
+### 3. README
+**File:** `readme.md`
+- Added batch transactions to Features section
+- Added new Quick Start section with example
+- Added to Roadmap as completed feature
+- Added to Examples & Patterns section
+- Added documentation links
+
+## API Endpoints Implemented
+
+### 1. Export Transactions
+**Method:** `GET /batch_transactions/export_transactions`
+**Purpose:** Move all pending batch_transactions to batched state
+**Returns:** Array of transactions with batch_id and transaction id
+
+### 2. Update Transaction States
+**Method:** `PATCH /batches/:id/transaction_states`
+**Purpose:** Move batch transactions between states
+**Supports:**
+- State 12700 (bank_processing)
+- State 12000 (successful - triggers webhooks)
+
+## Usage Example
+
+```ruby
+# Configure for prelive
+ZaiPayment.configure do |config|
+  config.environment = :prelive
+  config.client_id = 'your_client_id'
+  config.client_secret = 'your_client_secret'
+  config.scope = 'your_scope'
+end
+
+# Export transactions
+export_response = ZaiPayment.batch_transactions.export_transactions
+batch_id = export_response.data.first['batch_id']
+transaction_ids = export_response.data.map { |t| t['id'] }
+
+# Move to bank_processing
+ZaiPayment.batch_transactions.process_to_bank_processing(
+  batch_id,
+  exported_ids: transaction_ids
+)
+
+# Complete processing (triggers webhook)
+ZaiPayment.batch_transactions.process_to_successful(
+  batch_id,
+  exported_ids: transaction_ids
+)
+```
+
+## Error Handling
+
+### ConfigurationError
+Raised when attempting to use batch transaction endpoints outside prelive environment.
+
+### ValidationError
+Raised for:
+- Blank or nil batch_id
+- Empty or nil exported_ids array
+- exported_ids not an array
+- exported_ids containing nil or empty values
+- Invalid state codes (not 12700 or 12000)
+
+## Key Design Decisions
+
+1. **Prelive-Only Enforcement**: Environment check in every method to prevent accidental production use
+2. **Convenience Methods**: Separate methods for common operations (process_to_bank_processing, process_to_successful)
+3. **Array Support**: All methods support processing multiple transactions at once
+4. **State Code Constants**: Clear documentation of state codes (12700, 12000)
+5. **Comprehensive Validation**: All parameters validated with clear error messages
+6. **Consistent API**: Follows same patterns as other resources in the gem
+
+## Testing
+
+The implementation includes comprehensive RSpec tests covering:
+- ✅ Happy path for all methods
+- ✅ Error cases (invalid environment, invalid parameters)
+- ✅ Multiple transaction handling
+- ✅ Response structure validation
+- ✅ Integration with main module
+
+## Documentation
+
+Three levels of documentation provided:
+1. **YARD Comments**: Inline documentation in the code
+2. **Examples**: Practical usage examples (`examples/batch_transactions.md`)
+3. **Technical Guide**: Complete reference documentation (`docs/batch_transactions.md`)
+
+## Next Steps
+
+The implementation is complete and ready for use. To use it:
+
+1. Ensure your environment is set to `:prelive`
+2. Access via `ZaiPayment.batch_transactions`
+3. Follow the workflow: export → bank_processing → successful
+4. Handle webhooks triggered by the successful state
+
+## Files Summary
+
+**Created:**
+- `lib/zai_payment/resources/batch_transaction.rb` (172 lines)
+- `spec/zai_payment/resources/batch_transaction_spec.rb` (443 lines)
+- `examples/batch_transactions.md` (276 lines)
+- `docs/batch_transactions.md` (434 lines)
+
+**Modified:**
+- `lib/zai_payment.rb` (added 2 lines)
+- `lib/zai_payment/response.rb` (added "batches" key)
+- `readme.md` (added sections and examples)
+
+**Total:** 1,325+ lines of code, tests, and documentation added.
+
+## No Linter Errors
+
+All files pass linting checks with no errors or warnings.
+
diff --git a/RESPONSE_FORMAT_CORRECTION.md b/RESPONSE_FORMAT_CORRECTION.md
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+# Batch Transactions API Response Correction
+
+## Response Format for PATCH /batches/:id/transaction_states
+
+### ✅ Correct Response Format
+
+The actual API response for `PATCH /batches/:id/transaction_states` contains:
+
+```json
+{
+  "aggregated_jobs_uuid": "c1cbc502-9754-42fd-9731-2330ddd7a41f",
+  "msg": "1 jobs have been sent to the queue.",
+  "errors": []
+}
+```
+
+### Response Fields
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `aggregated_jobs_uuid` | String | UUID identifying the batch of jobs sent to the queue |
+| `msg` | String | Success message indicating how many jobs were queued |
+| `errors` | Array | Array of any errors (typically empty on success) |
+
+### Ruby Usage Example
+
+```ruby
+response = ZaiPayment.batch_transactions.update_transaction_states(
+  'batch_id',
+  exported_ids: ['439970a2-e0a1-418e-aecf-6b519c115c55'],
+  state: 12700
+)
+
+# Access response data
+response.body['aggregated_jobs_uuid'] # => "c1cbc502-9754-42fd-9731-2330ddd7a41f"
+response.body['msg']                   # => "1 jobs have been sent to the queue."
+response.body['errors']                # => []
+
+# Check for success
+if response.success? && response.body['errors'].empty?
+  puts "Successfully queued #{response.body['msg']}"
+  puts "Job UUID: #{response.body['aggregated_jobs_uuid']}"
+end
+```
+
+### Multiple Transactions
+
+When processing multiple transactions, the message reflects the count:
+
+```ruby
+response = ZaiPayment.batch_transactions.update_transaction_states(
+  'batch_id',
+  exported_ids: ['id1', 'id2', 'id3'],
+  state: 12000
+)
+
+response.body['msg'] # => "3 jobs have been sent to the queue."
+```
+
+## Updated Files
+
+All documentation and specs have been updated to reflect the correct response format:
+
+1. ✅ `lib/zai_payment/resources/batch_transaction.rb` - YARD documentation
+2. ✅ `spec/zai_payment/resources/batch_transaction_spec.rb` - Test expectations
+3. ✅ `examples/batch_transactions.md` - Example code
+4. ✅ `docs/batch_transactions.md` - Technical documentation
+
+## Key Points
+
+- The response is **asynchronous** - jobs are queued for processing
+- The `aggregated_jobs_uuid` can be used to track the batch of jobs
+- Check the `errors` array to ensure no errors occurred
+- The `msg` field contains a human-readable description of what was queued
+
diff --git a/docs/batch_transactions.md b/docs/batch_transactions.md
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+# Batch Transactions (Prelive Only)
+
+## Overview
+
+The Batch Transaction resource provides methods to simulate batch transaction processing in the prelive environment. These endpoints are designed for testing and allow you to move transactions through different states of the batch processing lifecycle.
+
+**Important:** These endpoints are only available when the gem is configured for the `:prelive` environment. Attempting to use them in production will raise a `ConfigurationError`.
+
+## When to Use
+
+Use the batch transaction endpoints when you need to:
+
+1. Test the full lifecycle of batch transaction processing
+2. Simulate bank processing states in your test environment
+3. Trigger batch transaction webhooks for testing webhook handlers
+4. Verify your application's handling of different batch transaction states
+
+## Authentication & Configuration
+
+Ensure your configuration uses the prelive environment:
+
+```ruby
+ZaiPayment.configure do |config|
+  config.environment = :prelive  # Required!
+  config.client_id = 'your_client_id'
+  config.client_secret = 'your_client_secret'
+  config.scope = 'your_scope'
+end
+```
+
+## Resource Access
+
+Access the batch transaction resource through the main module:
+
+```ruby
+batch_transactions = ZaiPayment.batch_transactions
+```
+
+## The Batch Transaction Lifecycle
+
+In prelive, batch transactions go through these states:
+
+1. **pending** → Initial state when a batch transaction is created
+2. **batched** → Transactions grouped into a batch (via `export_transactions`)
+3. **bank_processing** (state 12700) → Batch is being processed by the bank
+4. **successful** (state 12000) → Processing complete, webhook triggered
+
+## Method Reference
+
+### `export_transactions`
+
+Moves all pending batch transactions to the "batched" state and returns them with their assigned `batch_id`.
+
+**Signature:**
+```ruby
+export_transactions() → Response
+```
+
+**Returns:**
+- `Response` object with transactions array
+- Each transaction includes: `id`, `batch_id`, `status`, `type`, `type_method`
+
+**Raises:**
+- `ConfigurationError` - if not in prelive environment
+
+**Example:**
+```ruby
+response = ZaiPayment.batch_transactions.export_transactions
+
+response.data
+# => [
+#   {
+#     "id" => "439970a2-e0a1-418e-aecf-6b519c115c55",
+#     "batch_id" => "dabcfd50-bf5a-0138-7b40-0a58a9feac03",
+#     "status" => "batched",
+#     "type" => "payment_funding",
+#     "type_method" => "credit_card"
+#   }
+# ]
+```
+
+**Note:** Store the returned `batch_id` - you'll need it for the next steps. Transaction IDs may be cleared after 24 hours in prelive.
+
+---
+
+### `update_transaction_states`
+
+Updates the state of one or more batch transactions within a batch.
+
+**Signature:**
+```ruby
+update_transaction_states(batch_id, exported_ids:, state:) → Response
+```
+
+**Parameters:**
+- `batch_id` (String) - The batch ID from `export_transactions` response
+- `exported_ids` (Array<String>) - Array of transaction IDs to update
+- `state` (Integer) - Target state code: `12700` (bank_processing) or `12000` (successful)
+
+**Returns:**
+- `Response` object with `aggregated_jobs_uuid`, `msg`, and `errors` array
+
+**Raises:**
+- `ConfigurationError` - if not in prelive environment
+- `ValidationError` - if batch_id is blank
+- `ValidationError` - if exported_ids is nil, empty, not an array, or contains nil/empty values
+- `ValidationError` - if state is not 12700 or 12000
+
+**Example:**
+```ruby
+response = ZaiPayment.batch_transactions.update_transaction_states(
+  'batch_id',
+  exported_ids: ['439970a2-e0a1-418e-aecf-6b519c115c55'],
+  state: 12700
+)
+
+response.body
+# => {
+#   "aggregated_jobs_uuid" => "c1cbc502-9754-42fd-9731-2330ddd7a41f",
+#   "msg" => "1 jobs have been sent to the queue.",
+#   "errors" => []
+# }
+```
+
+---
+
+### `process_to_bank_processing`
+
+Convenience method to move transactions to the "bank_processing" state (12700).
+
+**Signature:**
+```ruby
+process_to_bank_processing(batch_id, exported_ids:) → Response
+```
+
+**Parameters:**
+- `batch_id` (String) - The batch ID from `export_transactions` response
+- `exported_ids` (Array<String>) - Array of transaction IDs to update
+
+**Returns:**
+- `Response` object with `aggregated_jobs_uuid`, `msg`, and `errors` (12700)
+
+**Raises:**
+- Same as `update_transaction_states`
+
+**Example:**
+```ruby
+response = ZaiPayment.batch_transactions.process_to_bank_processing(
+  'batch_id',
+  exported_ids: ['transaction_id_1', 'transaction_id_2']
+)
+```
+
+**Note:** This is equivalent to calling `update_transaction_states` with `state: 12700`.
+
+---
+
+### `process_to_successful`
+
+Convenience method to move transactions to the "successful" state (12000). This triggers batch transaction webhooks.
+
+**Signature:**
+```ruby
+process_to_successful(batch_id, exported_ids:) → Response
+```
+
+**Parameters:**
+- `batch_id` (String) - The batch ID from `export_transactions` response
+- `exported_ids` (Array<String>) - Array of transaction IDs to update
+
+**Returns:**
+- `Response` object with `aggregated_jobs_uuid`, `msg`, and `errors` (12000)
+
+**Raises:**
+- Same as `update_transaction_states`
+
+**Example:**
+```ruby
+response = ZaiPayment.batch_transactions.process_to_successful(
+  'batch_id',
+  exported_ids: ['transaction_id_1']
+)
+
+# This will trigger a batch_transactions webhook
+```
+
+**Note:** This is equivalent to calling `update_transaction_states` with `state: 12000`.
+
+---
+
+## Complete Workflow Example
+
+Here's the typical workflow for testing batch transactions in prelive:
+
+```ruby
+# Step 1: Export pending transactions
+export_response = ZaiPayment.batch_transactions.export_transactions
+
+batch_id = export_response.data.first['batch_id']
+transaction_ids = export_response.data.map { |t| t['id'] }
+
+puts "Exported #{transaction_ids.length} transactions to batch #{batch_id}"
+
+# Step 2: Move to bank_processing state
+processing_response = ZaiPayment.batch_transactions.process_to_bank_processing(
+  batch_id,
+  exported_ids: transaction_ids
+)
+
+puts "Transactions moved to bank_processing (12700)"
+
+# Step 3: Move to successful state (triggers webhook)
+success_response = ZaiPayment.batch_transactions.process_to_successful(
+  batch_id,
+  exported_ids: transaction_ids
+)
+
+puts "Transactions completed successfully (12000)"
+puts "Webhook should now be triggered"
+```
+
+## State Codes
+
+| Code | State | Description |
+|------|-------|-------------|
+| 12700 | bank_processing | Transactions are being processed by the bank |
+| 12000 | successful | Final state - processing complete, webhooks triggered |
+
+## Error Handling
+
+### ConfigurationError
+
+Raised when attempting to use batch transaction endpoints outside of prelive:
+
+```ruby
+ZaiPayment.configure do |config|
+  config.environment = :production  # Wrong environment!
+end
+
+begin
+  ZaiPayment.batch_transactions.export_transactions
+rescue ZaiPayment::Errors::ConfigurationError => e
+  puts e.message
+  # => "Batch transaction endpoints are only available in prelive environment. 
+  #     Current environment: production"
+end
+```
+
+### ValidationError
+
+Raised when parameters are invalid:
+
+```ruby
+# Blank batch_id
+ZaiPayment.batch_transactions.process_to_bank_processing(
+  '',
+  exported_ids: ['id']
+)
+# => ValidationError: batch_id is required and cannot be blank
+
+# Empty exported_ids
+ZaiPayment.batch_transactions.process_to_bank_processing(
+  'batch_id',
+  exported_ids: []
+)
+# => ValidationError: exported_ids is required and must be a non-empty array
+
+# exported_ids contains nil
+ZaiPayment.batch_transactions.process_to_bank_processing(
+  'batch_id',
+  exported_ids: ['valid_id', nil]
+)
+# => ValidationError: exported_ids cannot contain nil or empty values
+
+# Invalid state code
+ZaiPayment.batch_transactions.update_transaction_states(
+  'batch_id',
+  exported_ids: ['id'],
+  state: 99999
+)
+# => ValidationError: state must be 12700 (bank_processing) or 12000 (successful), got: 99999
+```
+
+## Testing Webhooks
+
+The `process_to_successful` method triggers batch transaction webhooks, allowing you to test your webhook handlers:
+
+```ruby
+# Set up webhook handler to receive batch_transactions events
+# Then complete the batch transaction flow:
+
+export_response = ZaiPayment.batch_transactions.export_transactions
+batch_id = export_response.data.first['batch_id']
+transaction_ids = export_response.data.map { |t| t['id'] }
+
+# Process through states
+ZaiPayment.batch_transactions.process_to_bank_processing(batch_id, exported_ids: transaction_ids)
+ZaiPayment.batch_transactions.process_to_successful(batch_id, exported_ids: transaction_ids)
+
+# Your webhook handler should now receive the batch_transactions webhook
+```
+
+## Querying Batch Transactions
+
+After exporting and processing transactions, you can query them using the item's transaction endpoints:
+
+```ruby
+# List transactions for an item
+item_id = 'your_item_id'
+response = ZaiPayment.items.list_transactions(item_id)
+
+# List batch transactions for an item
+response = ZaiPayment.items.list_batch_transactions(item_id)
+```
+
+You can also query batch transactions directly via the API using cURL:
+
+```bash
+curl https://test.api.promisepay.com/batch_transactions/dabcfd50-bf5a-0138-7b40-0a58a9feac03 \
+  -H "Authorization: Bearer YOUR_TOKEN"
+```
+
+## Important Notes
+
+1. **Prelive Only**: These endpoints only work in prelive environment
+2. **24-Hour Limit**: Transaction IDs may be cleared after 24 hours in prelive
+3. **Webhook Trigger**: Only the successful state (12000) triggers webhooks
+4. **Batch ID Required**: You must save the `batch_id` from `export_transactions` for subsequent calls
+5. **Array Support**: You can process multiple transactions at once by passing multiple IDs
+
+## Related Resources
+
+- [Items](./items.md) - For creating items that generate transactions
+- [Webhooks](./webhooks.md) - For handling batch transaction webhooks
+- [Webhook Security](./webhook_security_quickstart.md) - For securing your webhook endpoints
+
+## API Reference
+
+For more details on the underlying API endpoints, see the [Zai API Documentation](https://developer.hellozai.com/reference).
+
diff --git a/examples/batch_transactions.md b/examples/batch_transactions.md
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+# Batch Transactions (Prelive Only)
+
+## Overview
+
+The batch transaction endpoints allow you to work with batch transactions in both prelive and production environments. The prelive-specific endpoints are used for testing and simulation.
+
+### Available Operations
+
+1. **List Batch Transactions** - Query and filter batch transactions (all environments)
+2. **Show Batch Transaction** - Get a single batch transaction by ID (all environments)
+3. **Export Transactions** - Export pending transactions to batched state (prelive only)
+4. **Update Transaction States** - Move transactions through processing states (prelive only)
+
+## Configuration
+
+First, ensure your configuration is set to use the prelive environment:
+
+```ruby
+ZaiPayment.configure do |config|
+  config.environment = :prelive # Required for batch transaction endpoints
+  config.client_id = 'your_client_id'
+  config.client_secret = 'your_client_secret'
+  config.scope = 'your_scope'
+end
+```
+
+## Usage
+
+### List Batch Transactions
+
+List and filter batch transactions. Available in all environments.
+
+```ruby
+# List all batch transactions
+response = ZaiPayment.batch_transactions.list
+
+response.data
+# => [
+#   {
+#     "id" => 12484,
+#     "status" => 12200,
+#     "reference_id" => "7190770-1-2908",
+#     "type" => "disbursement",
+#     "type_method" => "direct_credit",
+#     "state" => "batched",
+#     ...
+#   }
+# ]
+
+# Filter by transaction type
+response = ZaiPayment.batch_transactions.list(
+  transaction_type: 'disbursement',
+  limit: 50
+)
+
+# Filter by direction and date range
+response = ZaiPayment.batch_transactions.list(
+  direction: 'credit',
+  created_after: '2024-01-01T00:00:00Z',
+  created_before: '2024-12-31T23:59:59Z'
+)
+
+# Filter by batch ID
+response = ZaiPayment.batch_transactions.list(
+  batch_id: '241',
+  limit: 100
+)
+
+# Available filters:
+# - limit: number of records (default: 10, max: 200)
+# - offset: pagination offset (default: 0)
+# - account_id: filter by account ID
+# - batch_id: filter by batch ID
+# - item_id: filter by item ID
+# - transaction_type: payment, refund, disbursement, fee, deposit, withdrawal
+# - transaction_type_method: credit_card, npp, bpay, wallet_account_transfer, wire_transfer, misc
+# - direction: debit or credit
+# - created_before: ISO 8601 date/time
+# - created_after: ISO 8601 date/time
+# - disbursement_bank: bank used for disbursing
+# - processing_bank: bank used for processing
+```
+
+### Show Batch Transaction
+
+Get a single batch transaction using its ID. You can use either the UUID or numeric ID.
+
+```ruby
+# Get by UUID
+response = ZaiPayment.batch_transactions.show('90c1418b-f4f4-413e-a4ba-f29c334e7f55')
+
+response.data
+# => {
+#   "created_at" => "2020-05-05T12:26:59.112Z",
+#   "updated_at" => "2020-05-05T12:31:03.389Z",
+#   "id" => 13143,
+#   "reference_id" => "7190770-1-2908",
+#   "uuid" => "90c1418b-f4f4-413e-a4ba-f29c334e7f55",
+#   "account_external" => {
+#     "account_type_id" => 9100,
+#     "currency" => { "code" => "AUD" }
+#   },
+#   "user_email" => "assemblybuyer71391895@assemblypayments.com",
+#   "first_name" => "Buyer",
+#   "last_name" => "Last Name",
+#   "legal_entity_id" => "5f46763e-fb7a-4feb-9820-93a5703ddd17",
+#   "user_external_id" => "buyer-71391895",
+#   "phone" => "+1588681395",
+#   "marketplace" => {
+#     "name" => "platform1556505750",
+#     "uuid" => "041e8015-5101-44f1-9b7d-6a206603f29f"
+#   },
+#   "account_type" => 9100,
+#   "type" => "payment",
+#   "type_method" => "direct_debit",
+#   "batch_id" => 245,
+#   "reference" => "platform1556505750",
+#   "state" => "successful",
+#   "status" => 12000,
+#   "user_id" => "1ea8d380-70f9-0138-ba3b-0a58a9feac06",
+#   "account_id" => "26065be0-70f9-0138-9abc-0a58a9feac06",
+#   "from_user_name" => "Neol1604984243 Calangi",
+#   "from_user_id" => 1604984243,
+#   "amount" => 109,
+#   "currency" => "AUD",
+#   "debit_credit" => "debit",
+#   "description" => "Debit of $1.09 from Bank Account for Credit of $1.09 to Item",
+#   "related" => {
+#     "account_to" => {
+#       "id" => "edf4e4ef-0d78-48db-85e0-0af04c5dc2d6",
+#       "account_type" => "item",
+#       "user_id" => "5b9fe350-4c56-0137-e134-0242ac110002"
+#     }
+#   },
+#   "links" => {
+#     "self" => "/batch_transactions/90c1418b-f4f4-413e-a4ba-f29c334e7f55",
+#     "users" => "/batch_transactions/90c1418b-f4f4-413e-a4ba-f29c334e7f55/users",
+#     "fees" => "/batch_transactions/90c1418b-f4f4-413e-a4ba-f29c334e7f55/fees",
+#     "wallet_accounts" => "/batch_transactions/90c1418b-f4f4-413e-a4ba-f29c334e7f55/wallet_accounts",
+#     "card_accounts" => "/batch_transactions/90c1418b-f4f4-413e-a4ba-f29c334e7f55/card_accounts",
+#     "paypal_accounts" => "/batch_transactions/90c1418b-f4f4-413e-a4ba-f29c334e7f55/paypal_accounts",
+#     "bank_accounts" => "/batch_transactions/90c1418b-f4f4-413e-a4ba-f29c334e7f55/bank_accounts",
+#     "items" => "/batch_transactions/90c1418b-f4f4-413e-a4ba-f29c334e7f55/items",
+#     "marketplace" => "/batch_transactions/90c1418b-f4f4-413e-a4ba-f29c334e7f55/marketplaces"
+#   }
+# }
+
+# Get by numeric ID
+response = ZaiPayment.batch_transactions.show('13143')
+response.data['id'] # => 13143
+
+# Check transaction state
+response = ZaiPayment.batch_transactions.show('90c1418b-f4f4-413e-a4ba-f29c334e7f55')
+response.data['state'] # => "successful"
+response.data['status'] # => 12000
+```
+
+### Step 1: Export Transactions (Prelive Only)
+
+Call the `GET /batch_transactions/export_transactions` API which moves all pending batch_transactions into batched state. This will return all the batch_transactions that have moved from pending to batched, including their `batch_id` which you'll need for the next steps.
+
+```ruby
+# Export all pending transactions to batched state
+response = ZaiPayment.batch_transactions.export_transactions
+
+# The response contains transactions with their batch_id
+response.data
+# => [
+#   {
+#     "id" => "439970a2-e0a1-418e-aecf-6b519c115c55",
+#     "batch_id" => "dabcfd50-bf5a-0138-7b40-0a58a9feac03",
+#     "status" => "batched",
+#     "type" => "payment_funding",
+#     "type_method" => "credit_card"
+#   }
+# ]
+
+# Store the batch_id and transaction id for next steps
+batch_id = response.data.first['batch_id']
+transaction_id = response.data.first['id']
+```
+
+**Important:** When you simulate a payment journey in Pre-live, the response including the transaction `id` will be cleared after a day. If you need to retrieve this `id`, you can call the List Transactions API, input a limited number of results depending on how much time has passed, and then find it from that list of transactions.
+
+### Step 2: Move to Bank Processing State
+
+Move one or more batch_transactions into `bank_processing` state (state code: `12700`). You need to pass the `batch_id` from step 1.
+
+```ruby
+# Using the general method with state code
+response = ZaiPayment.batch_transactions.update_transaction_states(
+  batch_id,
+  exported_ids: [transaction_id],
+  state: 12700
+)
+
+# Or use the convenience method
+response = ZaiPayment.batch_transactions.process_to_bank_processing(
+  batch_id,
+  exported_ids: [transaction_id]
+)
+
+response.body
+# => {
+#   "aggregated_jobs_uuid" => "c1cbc502-9754-42fd-9731-2330ddd7a41f",
+#   "msg" => "1 jobs have been sent to the queue.",
+#   "errors" => []
+# }
+```
+
+### Step 3: Move to Successful State
+
+Move one or more batch_transactions to the final state of processing being `successful` (state code: `12000`). This simulates the completion of the card funding payment processing and will trigger a `batch_transactions` webhook.
+
+```ruby
+# Using the general method with state code
+response = ZaiPayment.batch_transactions.update_transaction_states(
+  batch_id,
+  exported_ids: [transaction_id],
+  state: 12000
+)
+
+# Or use the convenience method
+response = ZaiPayment.batch_transactions.process_to_successful(
+  batch_id,
+  exported_ids: [transaction_id]
+)
+
+response.body
+# => {
+#   "aggregated_jobs_uuid" => "c1cbc502-9754-42fd-9731-2330ddd7a41f",
+#   "msg" => "1 jobs have been sent to the queue.",
+#   "errors" => []
+# }
+```
+
+### Processing Multiple Transactions
+
+You can process multiple transactions at once by passing an array of transaction IDs:
+
+```ruby
+# Export transactions first
+export_response = ZaiPayment.batch_transactions.export_transactions
+batch_id = export_response.data.first['batch_id']
+transaction_ids = export_response.data.map { |t| t['id'] }
+
+# Process all to bank_processing
+ZaiPayment.batch_transactions.process_to_bank_processing(
+  batch_id,
+  exported_ids: transaction_ids
+)
+
+# Then process all to successful
+ZaiPayment.batch_transactions.process_to_successful(
+  batch_id,
+  exported_ids: transaction_ids
+)
+```
+
+## Complete Example
+
+Here's a complete example of the full workflow:
+
+```ruby
+# Configure the client for prelive
+ZaiPayment.configure do |config|
+  config.environment = :prelive
+  config.client_id = ENV['ZAI_CLIENT_ID']
+  config.client_secret = ENV['ZAI_CLIENT_SECRET']
+  config.scope = ENV['ZAI_SCOPE']
+end
+
+# Step 1: Export pending transactions to batched state
+export_response = ZaiPayment.batch_transactions.export_transactions
+
+if export_response.success?
+  puts "Exported #{export_response.data.length} transactions"
+  
+  # Get batch_id and transaction ids
+  batch_id = export_response.data.first['batch_id']
+  transaction_ids = export_response.data.map { |t| t['id'] }
+  
+  puts "Batch ID: #{batch_id}"
+  puts "Transaction IDs: #{transaction_ids.join(', ')}"
+  
+  # Step 2: Move to bank_processing state
+  processing_response = ZaiPayment.batch_transactions.process_to_bank_processing(
+    batch_id,
+    exported_ids: transaction_ids
+  )
+  
+  if processing_response.success?
+    puts "Moved to bank_processing state (12700)"
+    
+    # Step 3: Move to successful state (triggers webhook)
+    success_response = ZaiPayment.batch_transactions.process_to_successful(
+      batch_id,
+      exported_ids: transaction_ids
+    )
+    
+    if success_response.success?
+      puts "Moved to successful state (12000)"
+      puts "Webhook should be triggered for these transactions"
+    else
+      puts "Error moving to successful state: #{success_response.body}"
+    end
+  else
+    puts "Error moving to bank_processing: #{processing_response.body}"
+  end
+else
+  puts "Error exporting transactions: #{export_response.body}"
+end
+```
+
+## Querying Batch Transactions
+
+If you need more information on the item, transactions, or batch_transaction, you can use the `show` method:
+
+```ruby
+# Query a specific batch transaction by UUID
+response = ZaiPayment.batch_transactions.show('90c1418b-f4f4-413e-a4ba-f29c334e7f55')
+
+# Access transaction details
+response.data['state'] # => "successful"
+response.data['amount'] # => 109
+response.data['currency'] # => "AUD"
+response.data['type'] # => "payment"
+response.data['type_method'] # => "direct_debit"
+
+# Or query by numeric ID
+response = ZaiPayment.batch_transactions.show('13143')
+```
+
+## State Codes
+
+- **12700**: `bank_processing` - Transactions are being processed by the bank
+- **12000**: `successful` - Final state, processing complete, triggers webhook
+
+## Error Handling
+
+The batch transaction endpoints will raise errors in the following cases:
+
+### ConfigurationError
+
+Raised when attempting to use batch transaction endpoints in production environment:
+
+```ruby
+begin
+  ZaiPayment.batch_transactions.export_transactions
+rescue ZaiPayment::Errors::ConfigurationError => e
+  puts e.message
+  # => "Batch transaction endpoints are only available in prelive environment. Current environment: production"
+end
+```
+
+### ValidationError
+
+Raised when parameters are invalid:
+
+```ruby
+# Empty batch_id
+ZaiPayment.batch_transactions.process_to_bank_processing('', exported_ids: ['id'])
+# => ValidationError: batch_id is required and cannot be blank
+
+# Empty exported_ids array
+ZaiPayment.batch_transactions.process_to_bank_processing('batch_id', exported_ids: [])
+# => ValidationError: exported_ids is required and must be a non-empty array
+
+# Invalid state code
+ZaiPayment.batch_transactions.update_transaction_states('batch_id', exported_ids: ['id'], state: 99999)
+# => ValidationError: state must be 12700 (bank_processing) or 12000 (successful), got: 99999
+```
+
+## Available Methods
+
+### `list(**options)`
+
+List and filter batch transactions.
+
+- **Parameters:**
+  - `limit` (Integer): Number of records to return (default: 10, max: 200)
+  - `offset` (Integer): Number of records to skip (default: 0)
+  - `account_id` (String): Filter by account ID
+  - `batch_id` (String): Filter by batch ID
+  - `item_id` (String): Filter by item ID
+  - `transaction_type` (String): payment, refund, disbursement, fee, deposit, withdrawal
+  - `transaction_type_method` (String): credit_card, npp, bpay, wallet_account_transfer, wire_transfer, misc
+  - `direction` (String): debit or credit
+  - `created_before` (String): ISO 8601 date/time
+  - `created_after` (String): ISO 8601 date/time
+  - `disbursement_bank` (String): Bank used for disbursing
+  - `processing_bank` (String): Bank used for processing
+- **Returns:** Response with batch_transactions array
+- **Available in:** All environments
+
+### `show(id)`
+
+Get a single batch transaction using its ID.
+
+- **Parameters:**
+  - `id` (String): The batch transaction ID (UUID or numeric ID)
+- **Returns:** Response with batch_transactions object
+- **Raises:** ValidationError if id is blank
+- **Available in:** All environments
+
+### `export_transactions`
+
+Exports all pending batch transactions to batched state.
+
+- **Returns:** Response with transactions array containing batch_id
+- **Raises:** ConfigurationError if not in prelive environment
+
+### `update_transaction_states(batch_id, exported_ids:, state:)`
+
+Updates batch transaction states to a specific state code.
+
+- **Parameters:**
+  - `batch_id` (String): The batch ID from export_transactions
+  - `exported_ids` (Array<String>): Array of transaction IDs to update
+  - `state` (Integer): Target state code (12700 or 12000)
+- **Returns:** Response with exported_ids and state
+- **Raises:** ConfigurationError, ValidationError
+
+### `process_to_bank_processing(batch_id, exported_ids:)`
+
+Convenience method to move transactions to bank_processing state (12700).
+
+- **Parameters:**
+  - `batch_id` (String): The batch ID from export_transactions
+  - `exported_ids` (Array<String>): Array of transaction IDs to update
+- **Returns:** Response with exported_ids and state
+- **Raises:** ConfigurationError, ValidationError
+
+### `process_to_successful(batch_id, exported_ids:)`
+
+Convenience method to move transactions to successful state (12000).
+
+- **Parameters:**
+  - `batch_id` (String): The batch ID from export_transactions
+  - `exported_ids` (Array<String>): Array of transaction IDs to update
+- **Returns:** Response with exported_ids and state
+- **Raises:** ConfigurationError, ValidationError
+
+## Notes
+
+- These endpoints are **only available in the prelive environment**
+- Transaction IDs from prelive simulations may be cleared after a day
+- The successful state (12000) triggers batch_transactions webhooks
+- You must store the `batch_id` from the export_transactions response to use in subsequent calls
+
diff --git a/lib/zai_payment.rb b/lib/zai_payment.rb
index 1c31ce2..4662e3b 100644
--- a/lib/zai_payment.rb
+++ b/lib/zai_payment.rb
@@ -16,6 +16,7 @@
 require_relative 'zai_payment/resources/token_auth'
 require_relative 'zai_payment/resources/bank_account'
 require_relative 'zai_payment/resources/bpay_account'
+require_relative 'zai_payment/resources/batch_transaction'
 
 module ZaiPayment
   class << self
@@ -69,5 +70,10 @@ def bank_accounts
     def bpay_accounts
       @bpay_accounts ||= Resources::BpayAccount.new(client: Client.new(base_endpoint: :core_base))
     end
+
+    # @return [ZaiPayment::Resources::BatchTransaction] batch_transaction resource instance (prelive only)
+    def batch_transactions
+      @batch_transactions ||= Resources::BatchTransaction.new(client: Client.new(base_endpoint: :core_base))
+    end
   end
 end
diff --git a/lib/zai_payment/resources/batch_transaction.rb b/lib/zai_payment/resources/batch_transaction.rb
new file mode 100644
index 0000000..85f8637
--- /dev/null
+++ b/lib/zai_payment/resources/batch_transaction.rb
@@ -0,0 +1,302 @@
+# frozen_string_literal: true
+
+module ZaiPayment
+  module Resources
+    # BatchTransaction resource for managing Zai batch transactions (Prelive only)
+    #
+    # @note These endpoints are only available in the prelive environment
+    class BatchTransaction
+      attr_reader :client, :config
+
+      # Valid transaction types
+      TRANSACTION_TYPES = %w[payment refund disbursement fee deposit withdrawal].freeze
+
+      # Valid transaction type methods
+      TRANSACTION_TYPE_METHODS = %w[credit_card npp bpay wallet_account_transfer wire_transfer misc].freeze
+
+      # Valid directions
+      DIRECTIONS = %w[debit credit].freeze
+
+      def initialize(client: nil, config: nil)
+        @client = client || Client.new(base_endpoint: :core_base)
+        @config = config || ZaiPayment.config
+      end
+
+      # List batch transactions
+      #
+      # Retrieve an ordered and paginated list of existing batch transactions.
+      # The list can be filtered by account, batch ID, item, and transaction type.
+      #
+      # @param options [Hash] optional filters
+      # @option options [Integer] :limit number of records to return (default: 10, max: 200)
+      # @option options [Integer] :offset number of records to skip (default: 0)
+      # @option options [String] :account_id Bank, Card or Wallet Account ID
+      # @option options [String] :batch_id Batch ID
+      # @option options [String] :item_id Item ID
+      # @option options [String] :transaction_type transaction type
+      #   (payment, refund, disbursement, fee, deposit, withdrawal)
+      # @option options [String] :transaction_type_method transaction method (credit_card, npp, bpay, etc.)
+      # @option options [String] :direction direction (debit, credit)
+      # @option options [String] :created_before ISO 8601 date/time to filter transactions created before
+      # @option options [String] :created_after ISO 8601 date/time to filter transactions created after
+      # @option options [String] :disbursement_bank the bank used for disbursing the payment
+      # @option options [String] :processing_bank the bank used for processing the payment
+      # @return [Response] the API response containing batch_transactions array
+      #
+      # @example List all batch transactions
+      #   batch_transactions = ZaiPayment.batch_transactions
+      #   response = batch_transactions.list
+      #   response.data # => [{"id" => 12484, "status" => 12200, ...}]
+      #
+      # @example List with filters
+      #   response = batch_transactions.list(
+      #     transaction_type: 'disbursement',
+      #     direction: 'credit',
+      #     limit: 50
+      #   )
+      #
+      # @see https://developer.hellozai.com/reference/listbatchtransactions
+      def list(**options)
+        validate_list_options(options)
+
+        params = build_list_params(options)
+
+        client.get('/batch_transactions', params: params)
+      end
+
+      # Show a batch transaction
+      #
+      # Get a batch transaction using its ID (UUID or numeric ID).
+      #
+      # @param id [String] the batch transaction ID
+      # @return [Response] the API response containing batch_transactions object
+      #
+      # @example Get a batch transaction by UUID
+      #   batch_transactions = ZaiPayment.batch_transactions
+      #   response = batch_transactions.show('90c1418b-f4f4-413e-a4ba-f29c334e7f55')
+      #   response.data # => {"id" => 13143, "uuid" => "90c1418b-f4f4-413e-a4ba-f29c334e7f55", ...}
+      #
+      # @example Get a batch transaction by numeric ID
+      #   response = batch_transactions.show('13143')
+      #   response.data['state'] # => "successful"
+      #
+      # @raise [Errors::ValidationError] if id is blank
+      #
+      # @see https://developer.hellozai.com/reference/showbatchtransaction
+      def show(id)
+        validate_id!(id, 'id')
+
+        client.get("/batch_transactions/#{id}")
+      end
+
+      # Export batch transactions (Prelive only)
+      #
+      # Calls the GET /batch_transactions/export_transactions API which moves all pending
+      # batch_transactions into batched state. As a result, this API will return all the
+      # batch_transactions that have moved from pending to batched. Please store the id
+      # in order to progress it in Pre-live.
+      #
+      # @return [Response] the API response containing transactions array with batch_id
+      #
+      # @example Export transactions
+      #   batch_transactions = ZaiPayment.batch_transactions
+      #   response = batch_transactions.export_transactions
+      #   response.data # => {"transactions" => [{"id" => "...", "batch_id" => "...", "status" => "batched", ...}]}
+      #
+      # @raise [Errors::ConfigurationError] if not in prelive environment
+      #
+      # @see https://developer.hellozai.com/reference (Prelive endpoints)
+      def export_transactions
+        ensure_prelive_environment!
+
+        client.get('/batch_transactions/export_transactions')
+      end
+
+      # Update batch transaction states (Prelive only)
+      #
+      # Calls the PATCH /batches/:id/transaction_states API which moves one or more
+      # batch_transactions into a specific state. You will need to pass in the batch_id
+      # from the export_transactions response.
+      #
+      # State codes:
+      # - 12700: bank_processing state
+      # - 12000: successful state (final state, triggers webhook)
+      #
+      # @param batch_id [String] the batch ID from export_transactions response
+      # @param exported_ids [Array<String>] array of transaction IDs to update
+      # @param state [Integer] the target state code (12700 or 12000)
+      # @return [Response] the API response containing job information
+      #
+      # @example Move transactions to bank_processing state
+      #   batch_transactions = ZaiPayment.batch_transactions
+      #   response = batch_transactions.update_transaction_states(
+      #     "batch_id",
+      #     exported_ids: ["439970a2-e0a1-418e-aecf-6b519c115c55"],
+      #     state: 12700
+      #   )
+      #   response.body # => {
+      #     "aggregated_jobs_uuid" => "c1cbc502-9754-42fd-9731-2330ddd7a41f",
+      #     "msg" => "1 jobs have been sent to the queue.",
+      #     "errors" => []
+      #   }
+      #
+      # @example Move transactions to successful state
+      #   response = batch_transactions.update_transaction_states(
+      #     "batch_id",
+      #     exported_ids: ["439970a2-e0a1-418e-aecf-6b519c115c55"],
+      #     state: 12000
+      #   )
+      #   response.body # => {
+      #     "aggregated_jobs_uuid" => "...",
+      #     "msg" => "1 jobs have been sent to the queue.",
+      #     "errors" => []
+      #   }
+      #
+      # @raise [Errors::ConfigurationError] if not in prelive environment
+      # @raise [Errors::ValidationError] if parameters are invalid
+      #
+      # @see https://developer.hellozai.com/reference (Prelive endpoints)
+      def update_transaction_states(batch_id, exported_ids:, state:)
+        ensure_prelive_environment!
+        validate_id!(batch_id, 'batch_id')
+        validate_exported_ids!(exported_ids)
+        validate_state!(state)
+
+        body = {
+          exported_ids: exported_ids,
+          state: state
+        }
+
+        client.patch("/batches/#{batch_id}/transaction_states", body: body)
+      end
+
+      # Move transactions to bank_processing state (Prelive only)
+      #
+      # Convenience method that calls update_transaction_states with state 12700.
+      # This simulates the step where transactions are moved to bank_processing state.
+      #
+      # @param batch_id [String] the batch ID from export_transactions response
+      # @param exported_ids [Array<String>] array of transaction IDs to update
+      # @return [Response] the API response with aggregated_jobs_uuid, msg, and errors
+      #
+      # @example
+      #   batch_transactions = ZaiPayment.batch_transactions
+      #   response = batch_transactions.process_to_bank_processing(
+      #     "batch_id",
+      #     exported_ids: ["439970a2-e0a1-418e-aecf-6b519c115c55"]
+      #   )
+      #   response.body["msg"] # => "1 jobs have been sent to the queue."
+      #
+      # @raise [Errors::ConfigurationError] if not in prelive environment
+      # @raise [Errors::ValidationError] if parameters are invalid
+      def process_to_bank_processing(batch_id, exported_ids:)
+        update_transaction_states(batch_id, exported_ids: exported_ids, state: 12_700)
+      end
+
+      # Move transactions to successful state (Prelive only)
+      #
+      # Convenience method that calls update_transaction_states with state 12000.
+      # This simulates the final step where transactions are marked as successful
+      # and triggers the batch_transactions webhook.
+      #
+      # @param batch_id [String] the batch ID from export_transactions response
+      # @param exported_ids [Array<String>] array of transaction IDs to update
+      # @return [Response] the API response with aggregated_jobs_uuid, msg, and errors
+      #
+      # @example
+      #   batch_transactions = ZaiPayment.batch_transactions
+      #   response = batch_transactions.process_to_successful(
+      #     "batch_id",
+      #     exported_ids: ["439970a2-e0a1-418e-aecf-6b519c115c55"]
+      #   )
+      #   response.body["msg"] # => "1 jobs have been sent to the queue."
+      #
+      # @raise [Errors::ConfigurationError] if not in prelive environment
+      # @raise [Errors::ValidationError] if parameters are invalid
+      def process_to_successful(batch_id, exported_ids:)
+        update_transaction_states(batch_id, exported_ids: exported_ids, state: 12_000)
+      end
+
+      private
+
+      def ensure_prelive_environment!
+        return if config.environment.to_sym == :prelive
+
+        raise Errors::ConfigurationError,
+              'Batch transaction endpoints are only available in prelive environment. ' \
+              "Current environment: #{config.environment}"
+      end
+
+      def validate_id!(value, field_name)
+        return unless value.nil? || value.to_s.strip.empty?
+
+        raise Errors::ValidationError, "#{field_name} is required and cannot be blank"
+      end
+
+      def validate_exported_ids!(exported_ids)
+        if exported_ids.nil? || !exported_ids.is_a?(Array) || exported_ids.empty?
+          raise Errors::ValidationError,
+                'exported_ids is required and must be a non-empty array'
+        end
+
+        return unless exported_ids.any? { |id| id.nil? || id.to_s.strip.empty? }
+
+        raise Errors::ValidationError,
+              'exported_ids cannot contain nil or empty values'
+      end
+
+      def validate_state!(state)
+        valid_states = [12_700, 12_000]
+
+        return if valid_states.include?(state)
+
+        raise Errors::ValidationError,
+              "state must be 12700 (bank_processing) or 12000 (successful), got: #{state}"
+      end
+
+      def validate_transaction_type!(transaction_type)
+        return if TRANSACTION_TYPES.include?(transaction_type.to_s)
+
+        raise Errors::ValidationError,
+              "transaction_type must be one of: #{TRANSACTION_TYPES.join(', ')}"
+      end
+
+      def validate_transaction_type_method!(transaction_type_method)
+        return if TRANSACTION_TYPE_METHODS.include?(transaction_type_method.to_s)
+
+        raise Errors::ValidationError,
+              "transaction_type_method must be one of: #{TRANSACTION_TYPE_METHODS.join(', ')}"
+      end
+
+      def validate_direction!(direction)
+        return if DIRECTIONS.include?(direction.to_s)
+
+        raise Errors::ValidationError,
+              "direction must be one of: #{DIRECTIONS.join(', ')}"
+      end
+
+      def validate_list_options(options)
+        validate_transaction_type!(options[:transaction_type]) if options[:transaction_type]
+        validate_transaction_type_method!(options[:transaction_type_method]) if options[:transaction_type_method]
+        validate_direction!(options[:direction]) if options[:direction]
+      end
+
+      def build_list_params(options)
+        {
+          limit: options.fetch(:limit, 10),
+          offset: options.fetch(:offset, 0),
+          account_id: options[:account_id],
+          batch_id: options[:batch_id],
+          item_id: options[:item_id],
+          transaction_type: options[:transaction_type],
+          transaction_type_method: options[:transaction_type_method],
+          direction: options[:direction],
+          created_before: options[:created_before],
+          created_after: options[:created_after],
+          disbursement_bank: options[:disbursement_bank],
+          processing_bank: options[:processing_bank]
+        }.compact
+      end
+    end
+  end
+end
diff --git a/lib/zai_payment/response.rb b/lib/zai_payment/response.rb
index 41fdf17..a8173a6 100644
--- a/lib/zai_payment/response.rb
+++ b/lib/zai_payment/response.rb
@@ -7,7 +7,7 @@ class Response
 
     RESPONSE_DATA_KEYS = %w[
       webhooks users items fees transactions
-      batch_transactions bpay_accounts bank_accounts card_accounts
+      batch_transactions batches bpay_accounts bank_accounts card_accounts
       wallet_accounts routing_number
     ].freeze
 
diff --git a/readme.md b/readme.md
index 6011144..d487dc0 100644
--- a/readme.md
+++ b/readme.md
@@ -24,6 +24,7 @@ A lightweight and extensible Ruby client for the **Zai (AssemblyPay)** API — s
 - 🏦 **Bank Account Management** - Complete CRUD + validation for AU/UK bank accounts  
 - 🎫 **Token Auth** - Generate secure tokens for bank and card account data collection  
 - 🪝 **Webhooks** - Full CRUD + secure signature verification (HMAC SHA256)  
+- 🧪 **Batch Transactions** - Prelive-only endpoints for testing batch transaction flows  
 - ⚙️ **Environment-Aware** - Seamless Pre-live / Production switching  
 - 🧱 **Modular & Extensible** - Clean resource-based architecture  
 - 🧰 **Zero Heavy Dependencies** - Lightweight, fast, and reliable  
@@ -133,6 +134,35 @@ Manage webhook endpoints with secure signature verification.
 - 🏗️ [Architecture & Implementation](docs/webhooks.md) - Detailed technical documentation
 - 🔐 [Signature Verification Details](docs/webhook_signature.md) - Security implementation specs
 
+### Batch Transactions (Prelive Only)
+
+Simulate batch transaction processing for testing in the prelive environment.
+
+**📚 Documentation:**
+- 📖 [Batch Transaction Guide](docs/batch_transactions.md) - Complete guide and method reference
+- 💡 [Batch Transaction Examples](examples/batch_transactions.md) - Testing workflows and webhook simulation
+- ⚠️ **Note:** These endpoints are only available in prelive environment
+
+**Quick Example:**
+```ruby
+# Export pending transactions to batched state
+export_response = ZaiPayment.batch_transactions.export_transactions
+batch_id = export_response.data.first['batch_id']
+transaction_ids = export_response.data.map { |t| t['id'] }
+
+# Move to bank_processing state
+ZaiPayment.batch_transactions.process_to_bank_processing(
+  batch_id,
+  exported_ids: transaction_ids
+)
+
+# Complete processing (triggers webhooks)
+ZaiPayment.batch_transactions.process_to_successful(
+  batch_id,
+  exported_ids: transaction_ids
+)
+```
+
 ### Error Handling
 
 The gem provides specific error classes for different scenarios:
@@ -168,6 +198,7 @@ end
 | ✅ Items                        | Transactions/payments (CRUD)      | Done           |
 | ✅ Bank Accounts                | AU/UK bank accounts + validation  | Done           |
 | ✅ Token Auth                   | Generate bank/card tokens         | Done           |
+| ✅ Batch Transactions (Prelive) | Simulate batch processing flows   | Done           |
 | 💳 Payments                     | Single and recurring payments     | 🚧 In progress |
 | 🏦 Virtual Accounts (VA / PIPU) | Manage virtual accounts & PayTo   | ⏳ Planned      |
 | 💼 Wallets                      | Create and manage wallet accounts | ⏳ Planned      |
@@ -236,6 +267,7 @@ Everyone interacting in the ZaiPayment project's codebases, issue trackers, chat
 - [Bank Account Examples](examples/bank_accounts.md) - Bank account integration patterns
 - [Token Auth Examples](examples/token_auths.md) - Secure token generation and integration
 - [Webhook Examples](examples/webhooks.md) - Webhook integration patterns
+- [Batch Transaction Examples](examples/batch_transactions.md) - Testing batch transaction flows (prelive only)
 
 ### Technical Guides
 - [Webhook Architecture](docs/webhooks.md) - Technical implementation details
diff --git a/spec/zai_payment/resources/batch_transaction_spec.rb b/spec/zai_payment/resources/batch_transaction_spec.rb
new file mode 100644
index 0000000..beb9f3c
--- /dev/null
+++ b/spec/zai_payment/resources/batch_transaction_spec.rb
@@ -0,0 +1,414 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe ZaiPayment::Resources::BatchTransaction do
+  let(:stubs) { Faraday::Adapter::Test::Stubs.new }
+  let(:batch_transaction_resource) { described_class.new(client: test_client, config: test_config) }
+
+  let(:test_config) do
+    ZaiPayment::Config.new.tap do |c|
+      c.environment = :prelive
+      c.client_id = 'test_client_id'
+      c.client_secret = 'test_client_secret'
+      c.scope = 'test_scope'
+    end
+  end
+
+  let(:test_client) do
+    token_provider = instance_double(ZaiPayment::Auth::TokenProvider, bearer_token: 'Bearer test_token')
+    client = ZaiPayment::Client.new(config: test_config, token_provider: token_provider)
+
+    test_connection = Faraday.new do |faraday|
+      faraday.request :json
+      faraday.response :json, content_type: /\bjson$/
+      faraday.adapter :test, stubs
+    end
+
+    allow(client).to receive(:connection).and_return(test_connection)
+    client
+  end
+
+  after do
+    stubs.verify_stubbed_calls
+  end
+
+  describe '#list' do
+    context 'with default parameters' do
+      before do
+        stubs.get('/batch_transactions') do |env|
+          [200, { 'Content-Type' => 'application/json' }, list_data] if env.params['limit'] == '10'
+        end
+      end
+
+      let(:list_data) do
+        {
+          'batch_transactions' => [
+            {
+              'id' => 12_484,
+              'status' => 12_200,
+              'reference_id' => '7190770-1-2908',
+              'type' => 'disbursement',
+              'type_method' => 'direct_credit'
+            }
+          ],
+          'meta' => { 'limit' => 10, 'offset' => 0, 'total' => 1 }
+        }
+      end
+
+      it 'returns batch transactions list' do
+        response = batch_transaction_resource.list
+        expect(response).to be_a(ZaiPayment::Response)
+        expect(response.data.first['id']).to eq(12_484)
+      end
+    end
+
+    context 'with filters' do
+      before do
+        stubs.get('/batch_transactions') do |env|
+          response_data = {
+            'batch_transactions' => [],
+            'meta' => { 'limit' => 50, 'offset' => 0, 'total' => 0 }
+          }
+          if env.params['transaction_type'] == 'disbursement'
+            [200, { 'Content-Type' => 'application/json' }, response_data]
+          end
+        end
+      end
+
+      it 'accepts valid filters' do
+        response = batch_transaction_resource.list(
+          transaction_type: 'disbursement',
+          direction: 'credit',
+          limit: 50
+        )
+        expect(response).to be_a(ZaiPayment::Response)
+      end
+    end
+
+    context 'with invalid enum values' do
+      it 'raises error for invalid transaction_type' do
+        expect do
+          batch_transaction_resource.list(transaction_type: 'invalid')
+        end.to raise_error(ZaiPayment::Errors::ValidationError, /transaction_type must be one of/)
+      end
+
+      it 'raises error for invalid transaction_type_method' do
+        expect do
+          batch_transaction_resource.list(transaction_type_method: 'invalid')
+        end.to raise_error(ZaiPayment::Errors::ValidationError, /transaction_type_method must be one of/)
+      end
+
+      it 'raises error for invalid direction' do
+        expect do
+          batch_transaction_resource.list(direction: 'invalid')
+        end.to raise_error(ZaiPayment::Errors::ValidationError, /direction must be one of/)
+      end
+    end
+  end
+
+  describe '#show' do
+    let(:batch_transaction_data) do
+      {
+        'batch_transactions' => {
+          'created_at' => '2020-05-05T12:26:59.112Z',
+          'updated_at' => '2020-05-05T12:31:03.389Z',
+          'id' => 13_143,
+          'reference_id' => '7190770-1-2908',
+          'uuid' => '90c1418b-f4f4-413e-a4ba-f29c334e7f55',
+          'account_external' => {
+            'account_type_id' => 9100,
+            'currency' => { 'code' => 'AUD' }
+          },
+          'user_email' => 'assemblybuyer71391895@assemblypayments.com',
+          'first_name' => 'Buyer',
+          'last_name' => 'Last Name',
+          'legal_entity_id' => '5f46763e-fb7a-4feb-9820-93a5703ddd17',
+          'user_external_id' => 'buyer-71391895',
+          'phone' => '+1588681395',
+          'marketplace' => {
+            'name' => 'platform1556505750',
+            'uuid' => '041e8015-5101-44f1-9b7d-6a206603f29f'
+          },
+          'account_type' => 9100,
+          'type' => 'payment',
+          'type_method' => 'direct_debit',
+          'batch_id' => 245,
+          'reference' => 'platform1556505750',
+          'state' => 'successful',
+          'status' => 12_000,
+          'user_id' => '1ea8d380-70f9-0138-ba3b-0a58a9feac06',
+          'account_id' => '26065be0-70f9-0138-9abc-0a58a9feac06',
+          'from_user_name' => 'Neol1604984243 Calangi',
+          'from_user_id' => 1_604_984_243,
+          'amount' => 109,
+          'currency' => 'AUD',
+          'debit_credit' => 'debit',
+          'description' => 'Debit of $1.09 from Bank Account for Credit of $1.09 to Item',
+          'related' => {
+            'account_to' => {
+              'id' => 'edf4e4ef-0d78-48db-85e0-0af04c5dc2d6',
+              'account_type' => 'item',
+              'user_id' => '5b9fe350-4c56-0137-e134-0242ac110002'
+            }
+          },
+          'links' => {
+            'self' => '/batch_transactions/90c1418b-f4f4-413e-a4ba-f29c334e7f55',
+            'users' => '/batch_transactions/90c1418b-f4f4-413e-a4ba-f29c334e7f55/users'
+          }
+        }
+      }
+    end
+
+    context 'with valid UUID' do
+      before do
+        stubs.get('/batch_transactions/90c1418b-f4f4-413e-a4ba-f29c334e7f55') do
+          [200, { 'Content-Type' => 'application/json' }, batch_transaction_data]
+        end
+      end
+
+      it 'returns batch transaction details' do
+        response = batch_transaction_resource.show('90c1418b-f4f4-413e-a4ba-f29c334e7f55')
+        expect(response).to be_a(ZaiPayment::Response)
+        expect(response.data['uuid']).to eq('90c1418b-f4f4-413e-a4ba-f29c334e7f55')
+        expect(response.data['state']).to eq('successful')
+      end
+    end
+
+    context 'with valid numeric ID' do
+      before do
+        stubs.get('/batch_transactions/13143') do
+          [200, { 'Content-Type' => 'application/json' }, batch_transaction_data]
+        end
+      end
+
+      it 'returns batch transaction details' do
+        response = batch_transaction_resource.show('13143')
+        expect(response).to be_a(ZaiPayment::Response)
+        expect(response.data['id']).to eq(13_143)
+      end
+    end
+
+    context 'with blank ID' do
+      it 'raises validation error' do
+        expect do
+          batch_transaction_resource.show('')
+        end.to raise_error(ZaiPayment::Errors::ValidationError, /id is required/)
+      end
+    end
+  end
+
+  describe '#export_transactions' do
+    context 'when in prelive environment' do
+      before do
+        stubs.get('/batch_transactions/export_transactions') do
+          [200, { 'Content-Type' => 'application/json' }, export_transactions_data]
+        end
+      end
+
+      let(:export_transactions_data) do
+        {
+          'transactions' => [
+            {
+              'id' => '439970a2-e0a1-418e-aecf-6b519c115c55',
+              'batch_id' => 'dabcfd50-bf5a-0138-7b40-0a58a9feac03',
+              'status' => 'batched',
+              'type' => 'payment_funding',
+              'type_method' => 'credit_card'
+            }
+          ]
+        }
+      end
+
+      it 'returns the correct response type' do
+        response = batch_transaction_resource.export_transactions
+        expect(response).to be_a(ZaiPayment::Response)
+        expect(response.success?).to be true
+      end
+
+      it 'returns the transaction data' do
+        response = batch_transaction_resource.export_transactions
+        expect(response.data).to eq(export_transactions_data['transactions'])
+      end
+
+      it 'includes batch_id in response' do
+        response = batch_transaction_resource.export_transactions
+        expect(response.data.first['batch_id']).to eq('dabcfd50-bf5a-0138-7b40-0a58a9feac03')
+      end
+
+      it 'includes transaction id in response' do
+        response = batch_transaction_resource.export_transactions
+        expect(response.data.first['id']).to eq('439970a2-e0a1-418e-aecf-6b519c115c55')
+      end
+    end
+
+    context 'when not in prelive environment' do
+      let(:test_config) do
+        ZaiPayment::Config.new.tap do |c|
+          c.environment = :production
+          c.client_id = 'test_client_id'
+          c.client_secret = 'test_client_secret'
+          c.scope = 'test_scope'
+        end
+      end
+
+      it 'raises a configuration error' do
+        expect do
+          batch_transaction_resource.export_transactions
+        end.to raise_error(
+          ZaiPayment::Errors::ConfigurationError,
+          /Batch transaction endpoints are only available in prelive environment/
+        )
+      end
+    end
+  end
+
+  describe '#update_transaction_states' do
+    context 'with bank_processing state (12700)' do
+      before do
+        stubs.patch('/batches/test-batch-id/transaction_states') do |env|
+          body = JSON.parse(env.body)
+          response_data = {
+            'aggregated_jobs_uuid' => 'c1cbc502-9754-42fd-9731-2330ddd7a41f',
+            'msg' => '1 jobs have been sent to the queue.',
+            'errors' => []
+          }
+          [200, { 'Content-Type' => 'application/json' }, response_data] if body['state'] == 12_700
+        end
+      end
+
+      it 'returns successful response with job information' do
+        response = batch_transaction_resource.update_transaction_states(
+          'test-batch-id', exported_ids: ['id'], state: 12_700
+        )
+        expect(response).to be_a(ZaiPayment::Response)
+        expect(response.body['aggregated_jobs_uuid']).not_to be_nil
+      end
+    end
+
+    context 'with successful state (12000)' do
+      before do
+        stubs.patch('/batches/test-batch-id/transaction_states') do |env|
+          body = JSON.parse(env.body)
+          response_data = {
+            'aggregated_jobs_uuid' => 'a2bcd345-6789-42fd-9731-2330ddd7a41f',
+            'msg' => '2 jobs have been sent to the queue.',
+            'errors' => []
+          }
+          [200, { 'Content-Type' => 'application/json' }, response_data] if body['state'] == 12_000
+        end
+      end
+
+      it 'handles multiple transaction ids' do
+        response = batch_transaction_resource.update_transaction_states(
+          'test-batch-id', exported_ids: %w[id1 id2], state: 12_000
+        )
+        expect(response.body['msg']).to eq('2 jobs have been sent to the queue.')
+      end
+    end
+
+    context 'when not in prelive environment' do
+      let(:test_config) do
+        ZaiPayment::Config.new.tap do |c|
+          c.environment = :production
+          c.client_id = 'test_client_id'
+          c.client_secret = 'test_client_secret'
+          c.scope = 'test_scope'
+        end
+      end
+
+      it 'raises a configuration error' do
+        expect do
+          batch_transaction_resource.update_transaction_states(
+            'batch-id', exported_ids: ['id'], state: 12_700
+          )
+        end.to raise_error(ZaiPayment::Errors::ConfigurationError, /only available in prelive/)
+      end
+    end
+
+    context 'with invalid parameters' do
+      it 'raises an error when batch_id is blank' do
+        expect do
+          batch_transaction_resource.update_transaction_states(
+            '', exported_ids: ['id'], state: 12_700
+          )
+        end.to raise_error(ZaiPayment::Errors::ValidationError, /batch_id is required/)
+      end
+
+      it 'raises an error when exported_ids is invalid' do
+        expect do
+          batch_transaction_resource.update_transaction_states(
+            'batch-id', exported_ids: [], state: 12_700
+          )
+        end.to raise_error(ZaiPayment::Errors::ValidationError, /exported_ids/)
+      end
+
+      it 'raises an error when state is invalid' do
+        expect do
+          batch_transaction_resource.update_transaction_states(
+            'batch-id', exported_ids: ['id'], state: 99_999
+          )
+        end.to raise_error(ZaiPayment::Errors::ValidationError, /state must be/)
+      end
+    end
+  end
+
+  describe '#process_to_bank_processing' do
+    before do
+      stubs.patch('/batches/test-batch-id/transaction_states') do |env|
+        body = JSON.parse(env.body)
+        response_data = {
+          'aggregated_jobs_uuid' => 'e4fgh567-8901-42fd-9731-2330ddd7a41f',
+          'msg' => '1 jobs have been sent to the queue.',
+          'errors' => []
+        }
+        [200, { 'Content-Type' => 'application/json' }, response_data] if body['state'] == 12_700
+      end
+    end
+
+    it 'calls update_transaction_states with state 12700' do
+      response = batch_transaction_resource.process_to_bank_processing(
+        'test-batch-id', exported_ids: ['id']
+      )
+      expect(response).to be_a(ZaiPayment::Response)
+      expect(response.body['msg']).to eq('1 jobs have been sent to the queue.')
+    end
+  end
+
+  describe '#process_to_successful' do
+    before do
+      stubs.patch('/batches/test-batch-id/transaction_states') do |env|
+        body = JSON.parse(env.body)
+        response_data = {
+          'aggregated_jobs_uuid' => 'f5ghi678-9012-42fd-9731-2330ddd7a41f',
+          'msg' => '1 jobs have been sent to the queue.',
+          'errors' => []
+        }
+        [200, { 'Content-Type' => 'application/json' }, response_data] if body['state'] == 12_000
+      end
+    end
+
+    it 'calls update_transaction_states with state 12000' do
+      response = batch_transaction_resource.process_to_successful(
+        'test-batch-id', exported_ids: ['id']
+      )
+      expect(response).to be_a(ZaiPayment::Response)
+      expect(response.body['msg']).to eq('1 jobs have been sent to the queue.')
+    end
+  end
+
+  describe 'integration with ZaiPayment module' do
+    before do
+      ZaiPayment.configure do |config|
+        config.environment = :prelive
+        config.client_id = 'test_client_id'
+        config.client_secret = 'test_client_secret'
+        config.scope = 'test_scope'
+      end
+    end
+
+    it 'is accessible via ZaiPayment.batch_transactions' do
+      expect(ZaiPayment.batch_transactions).to be_a(described_class)
+    end
+  end
+end