diff --git a/src/Drivers/Asanpardakht/Asanpardakht.php b/src/Drivers/Asanpardakht/Asanpardakht.php
index ab71e050..940b97bc 100644
--- a/src/Drivers/Asanpardakht/Asanpardakht.php
+++ b/src/Drivers/Asanpardakht/Asanpardakht.php
@@ -70,8 +70,6 @@ public function __construct(Invoice $invoice, $settings)
      */
     public function purchase()
     {
-        $this->invoice->uuid(crc32($this->invoice->getUuid()));
-
         $result = $this->token();
 
         if (!isset($result['status_code']) or $result['status_code'] != 200) {
@@ -190,16 +188,17 @@ protected function createReceipt($referenceId): Receipt
      */
     public function token(): array
     {
+        $this->invoice->convertUuidToNumeric();
         if (strpos($this->settings->callbackUrl, '?') !== false) {
-            $query = '&' . http_build_query(['invoice' => $this->invoice->getUuid()]);
+            $query = '&' . http_build_query(['invoice' => $this->invoice->getNumericUuid()]);
         } else {
-            $query = '?' . http_build_query(['invoice' => $this->invoice->getUuid()]);
+            $query = '?' . http_build_query(['invoice' => $this->invoice->getNumericUuid()]);
         }
 
         return $this->callApi('POST', self::TokenURL, [
             'serviceTypeId' => 1,
             'merchantConfigurationId' => $this->settings->merchantConfigID,
-            'localInvoiceId' => $this->invoice->getUuid(),
+            'localInvoiceId' => $this->invoice->getNumericUuid(),
             'amountInRials' => $this->invoice->getAmount() * ($this->settings->currency == 'T' ? 10 : 1), // convert to rial
             'localDate' => $this->getTime()['content'],
             'callbackURL' => $this->settings->callbackUrl . $query,
diff --git a/src/Drivers/Behpardakht/Behpardakht.php b/src/Drivers/Behpardakht/Behpardakht.php
index 14ebcca7..3773070f 100644
--- a/src/Drivers/Behpardakht/Behpardakht.php
+++ b/src/Drivers/Behpardakht/Behpardakht.php
@@ -239,7 +239,7 @@ protected function preparePurchaseData()
             'amount' => $this->invoice->getAmount() * ($this->settings->currency == 'T' ? 10 : 1), // convert to rial
             'localDate' => Carbon::now()->format('Ymd'),
             'localTime' => Carbon::now()->format('Gis'),
-            'orderId' => crc32($this->invoice->getUuid()),
+            'orderId' => $this->invoice->getNumericUuid(),
             'additionalData' => $description,
             'payerId' => $payerId
         );
diff --git a/src/Drivers/Etebarino/Etebarino.php b/src/Drivers/Etebarino/Etebarino.php
index 04c3f126..565b3f96 100644
--- a/src/Drivers/Etebarino/Etebarino.php
+++ b/src/Drivers/Etebarino/Etebarino.php
@@ -48,8 +48,6 @@ public function __construct(Invoice $invoice, $settings)
      */
     public function purchase()
     {
-        $this->invoice->uuid(crc32($this->invoice->getUuid()));
-
         $result = $this->token();
 
         if (!isset($result['status_code']) or $result['status_code'] != 200) {
@@ -149,7 +147,7 @@ public function token(): array
             'terminalUser' => $this->settings->username,
             'merchantCode' => $this->settings->merchantId,
             'terminalPass' => $this->settings->password,
-            'merchantRefCode' => $this->invoice->getUuid(),
+            'merchantRefCode' => $this->invoice->getNumericUuid(),
             "description" => $this->invoice->getDetail('description'),
             "returnUrl" => $this->settings->callbackUrl,
             'paymentItems' => $this->getItems(),
diff --git a/src/Drivers/Fanavacard/Fanavacard.php b/src/Drivers/Fanavacard/Fanavacard.php
index c0a6cd96..c5e49c58 100644
--- a/src/Drivers/Fanavacard/Fanavacard.php
+++ b/src/Drivers/Fanavacard/Fanavacard.php
@@ -59,7 +59,7 @@ public function __construct(Invoice $invoice, $settings)
      */
     public function purchase()
     {
-        $this->invoice->uuid(crc32($this->invoice->getUuid()));
+        $this->invoice->uuid($this->invoice->getNumericUuid());
         $token  = $this->getToken();
         $this->invoice->transactionId($token['Token']);
 
@@ -158,7 +158,7 @@ public function getToken(): array
             'json'=>[
                 'WSContext'=> $this->getWsContext(),
                 'TransType'=>'EN_GOODS',
-                'ReserveNum'=>$this->invoice->getDetail('invoice_number') ?? crc32($this->invoice->getUuid()),
+                'ReserveNum'=>$this->invoice->getDetail('invoice_number') ?? $this->invoice->getNumericUuid(),
                 'Amount'=> $this->invoice->getAmount() * ($this->settings->currency == 'T' ? 10 : 1), // convert to rial
                 'RedirectUrl'=>$this->settings->callbackUrl,
             ]]);
diff --git a/src/Drivers/Nextpay/Nextpay.php b/src/Drivers/Nextpay/Nextpay.php
index ea83e9bb..d830b580 100644
--- a/src/Drivers/Nextpay/Nextpay.php
+++ b/src/Drivers/Nextpay/Nextpay.php
@@ -59,9 +59,10 @@ public function __construct(Invoice $invoice, $settings)
      */
     public function purchase()
     {
+        $this->invoice->uuid(intval(1, time()) . $this->invoice->getNumericUuid());
         $data = [
             'api_key' => $this->settings->merchantId,
-            'order_id' => intval(1, time()) . crc32($this->invoice->getUuid()),
+            'order_id' => $this->invoice->getUuid(),
             'amount' => $this->invoice->getAmount() / ($this->settings->currency == 'T' ? 1 : 10), // convert to toman
             'callback_uri' => $this->settings->callbackUrl,
         ];
diff --git a/src/Drivers/Parsian/Parsian.php b/src/Drivers/Parsian/Parsian.php
index d0de6247..cd162397 100644
--- a/src/Drivers/Parsian/Parsian.php
+++ b/src/Drivers/Parsian/Parsian.php
@@ -178,7 +178,7 @@ protected function preparePurchaseData()
         return [
             'LoginAccount'   => $this->settings->merchantId,
             'Amount'         => $this->invoice->getAmount() * ($this->settings->currency == 'T' ? 10 : 1), // convert to rial
-            'OrderId'        => crc32($this->invoice->getUuid()),
+            'OrderId'        => $this->invoice->getNumericUuid(),
             'CallBackUrl'    => $this->settings->callbackUrl,
             'Originator'     => $phone,
             'AdditionalData' => $description,
diff --git a/src/Drivers/Pasargad/Pasargad.php b/src/Drivers/Pasargad/Pasargad.php
index 28567a69..3f863639 100644
--- a/src/Drivers/Pasargad/Pasargad.php
+++ b/src/Drivers/Pasargad/Pasargad.php
@@ -194,12 +194,13 @@ protected function getPreparedInvoiceData()
      */
     protected function prepareInvoiceData(): array
     {
+        $this->invoice->uuid($this->invoice->getNumericUuid() . rand(0, time()));
         $action = 1003; // 1003 : for buy request (bank standard)
         $merchantCode = $this->settings->merchantId;
         $terminalCode = $this->settings->terminalCode;
         $amount = $this->invoice->getAmount() * ($this->settings->currency == 'T' ? 10 : 1); // convert to rial
         $redirectAddress = $this->settings->callbackUrl;
-        $invoiceNumber = crc32($this->invoice->getUuid()) . rand(0, time());
+        $invoiceNumber = $this->invoice->getNumericUuid();
 
         $iranTime = new DateTime('now', new DateTimeZone('Asia/Tehran'));
         $timeStamp = $iranTime->format("Y/m/d H:i:s");
diff --git a/src/Drivers/Sadad/Sadad.php b/src/Drivers/Sadad/Sadad.php
index 5bf6e312..9efafba2 100644
--- a/src/Drivers/Sadad/Sadad.php
+++ b/src/Drivers/Sadad/Sadad.php
@@ -62,7 +62,7 @@ public function __construct(Invoice $invoice, $settings)
     public function purchase()
     {
         $terminalId = $this->settings->terminalId;
-        $orderId = crc32($this->invoice->getUuid());
+        $orderId = $this->invoice->getNumericUuid();
         $amount = $this->invoice->getAmount() * ($this->settings->currency == 'T' ? 10 : 1); // convert to rial
         $key = $this->settings->key;
 
diff --git a/src/Drivers/Yekpay/Yekpay.php b/src/Drivers/Yekpay/Yekpay.php
index 387d11a1..8d7a404c 100644
--- a/src/Drivers/Yekpay/Yekpay.php
+++ b/src/Drivers/Yekpay/Yekpay.php
@@ -71,11 +71,12 @@ public function purchase()
         } else {
             $description = $this->settings->description;
         }
+        $this->invoice->uuid(intval(1, time()) . $this->invoice->getNumericUuid());
 
         $data->merchantId = $this->settings->merchantId;
         $data->amount = $this->invoice->getAmount();
         $data->callback = $this->settings->callbackUrl;
-        $data->orderNumber = intval(1, time()).crc32($this->invoice->getUuid());
+        $data->orderNumber = $this->invoice->getUuid();
 
         $data->fromCurrencyCode = (int) $this->settings->fromCurrencyCode;
         $data->toCurrencyCode = (int) $this->settings->toCurrencyCode;
diff --git a/src/Drivers/Zibal/Zibal.php b/src/Drivers/Zibal/Zibal.php
index 080d7999..28a9a97e 100644
--- a/src/Drivers/Zibal/Zibal.php
+++ b/src/Drivers/Zibal/Zibal.php
@@ -58,11 +58,12 @@ public function __construct(Invoice $invoice, $settings)
      */
     public function purchase()
     {
+        $this->invoice->uuid($this->invoice->getNumericUuid() . time());
         $details = $this->invoice->getDetails();
 
         $amount = $this->invoice->getAmount() * ($this->settings->currency == 'T' ? 10 : 1); // convert to rial
 
-        $orderId = crc32($this->invoice->getUuid()).time();
+        $orderId = $this->invoice->getNumericUuid();
         if (!empty($details['orderId'])) {
             $orderId = $details['orderId'];
         } elseif (!empty($details['order_id'])) {
diff --git a/src/Invoice.php b/src/Invoice.php
index ae96f52e..a6dee76c 100644
--- a/src/Invoice.php
+++ b/src/Invoice.php
@@ -35,6 +35,8 @@ class Invoice
      */
     protected $driver;
 
+    protected $uuidIsProvidedByUser = false;
+
     /**
      * Invoice constructor.
      *
@@ -46,19 +48,21 @@ public function __construct()
     }
 
     /**
-     * Set invoice uuid
+     * Set invoice uuid. this method wouldn't allow to modify uuid if it's provided by user.
      *
      * @param $uuid|null
-     *
-     * @throws \Exception
+     * @return self
      */
     public function uuid($uuid = null)
     {
-        if (empty($uuid)) {
-            $uuid = Uuid::uuid4()->toString();
+        if (empty($this->uuid)) {
+            $this->uuidIsProvidedByUser = true;
+            $this->uuid = $uuid;
+        } elseif (!$this->uuidIsProvidedByUser) {
+            $this->uuid = $uuid;
         }
 
-        $this->uuid = $uuid;
+        return $this;
     }
 
     /**
@@ -68,9 +72,38 @@ public function uuid($uuid = null)
      */
     public function getUuid()
     {
+        if (empty($this->uuid)) {
+            $this->uuid = Uuid::uuid4()->toString();
+        }
+        return $this->uuid;
+    }
+
+    /**
+     * Convert invoice uuid to numeric when needed and get it.
+     *
+     * @return string
+     */
+    public function getNumericUuid()
+    {
+        if (is_numeric($this->uuid)) {
+            return $this->uuid;
+        }
+
+        $this->convertUuidToNumeric();
+
         return $this->uuid;
     }
 
+
+    /**
+     * Convert uuid value to numeric if its not provided by user.
+     * @return self
+     */
+    public function convertUuidToNumeric()
+    {
+        return $this->uuid(crc32($this->getUuid()));
+    }
+
     /**
      * Set the amount of invoice
      *