diff --git a/contract/contract/src/base/errors.rs b/contract/contract/src/base/errors.rs
index d365f51..a758e1c 100644
--- a/contract/contract/src/base/errors.rs
+++ b/contract/contract/src/base/errors.rs
@@ -107,3 +107,12 @@ mod tests {
         assert!(SecondCrowdfundingError::EventSoldOut < SecondCrowdfundingError::EventExpired);
     }
 }
+
+#[contracterror]
+#[derive(Copy, Clone, Debug, Eq, PartialEq, PartialOrd, Ord)]
+#[repr(u32)]
+pub enum EventError {
+    EventNotFound = 1,
+    EventExpired = 2,
+    EventNotActive = 3,
+}
diff --git a/contract/contract/src/crowdfunding.rs b/contract/contract/src/crowdfunding.rs
index ac13dc0..9aee6fb 100644
--- a/contract/contract/src/crowdfunding.rs
+++ b/contract/contract/src/crowdfunding.rs
@@ -2,16 +2,16 @@
 use soroban_sdk::{contract, contractimpl, Address, BytesN, Env, String, Vec};
 
 use crate::base::{
-    errors::{CrowdfundingError, SecondCrowdfundingError},
+    errors::{CrowdfundingError, EventError, SecondCrowdfundingError},
     events,
     reentrancy::{
         acquire_emergency_lock, reentrancy_lock_logic, release_emergency_lock, release_pool_lock,
     },
     types::{
         CampaignDetails, CampaignLifecycleStatus, CampaignMetrics, Contribution,
-        EmergencyWithdrawal, MultiSigConfig, PoolConfig, PoolContribution, PoolMetadata,
-        PoolMetrics, PoolState, StorageKey, MAX_DESCRIPTION_LENGTH, MAX_HASH_LENGTH,
-        MAX_STRING_LENGTH, MAX_URL_LENGTH,
+        EmergencyWithdrawal, Event, EventStatus, MultiSigConfig, PoolConfig, PoolContribution,
+        PoolMetadata, PoolMetrics, PoolState, StorageKey, Ticket, TicketType,
+        MAX_DESCRIPTION_LENGTH, MAX_HASH_LENGTH, MAX_STRING_LENGTH, MAX_URL_LENGTH,
     },
 };
 use crate::interfaces::crowdfunding::CrowdfundingTrait;
diff --git a/contract/contract/src/interfaces/crowdfunding.rs b/contract/contract/src/interfaces/crowdfunding.rs
index 5d21f8d..3c396cd 100644
--- a/contract/contract/src/interfaces/crowdfunding.rs
+++ b/contract/contract/src/interfaces/crowdfunding.rs
@@ -1,10 +1,10 @@
 use soroban_sdk::{Address, BytesN, Env, String, Vec};
 
 use crate::base::{
-    errors::CrowdfundingError,
+    errors::{CrowdfundingError, EventError},
     types::{
-        CampaignDetails, CampaignLifecycleStatus, PoolConfig, PoolContribution, PoolMetadata,
-        PoolState,
+        CampaignDetails, CampaignLifecycleStatus, Event, PoolConfig, PoolContribution,
+        PoolMetadata, PoolState, TicketType,
     },
 };