refactor(connector): [Cryptopay] add psync reference id validation for Cryptopay (#2668)

Author: prasunna09

crates/router/src/connector/cryptopay.rs

@@ -171,8 +171,6 @@ impl ConnectorCommon for Cryptopay {
     }
 }
 
-impl ConnectorValidation for Cryptopay {}
-
 impl ConnectorIntegration<api::Session, types::PaymentsSessionData, types::PaymentsResponseData>
     for Cryptopay
 {
@@ -279,6 +277,16 @@ impl ConnectorIntegration<api::Authorize, types::PaymentsAuthorizeData, types::P
     }
 }
 
+impl ConnectorValidation for Cryptopay {
+    fn validate_psync_reference_id(
+        &self,
+        _data: &types::PaymentsSyncRouterData,
+    ) -> CustomResult<(), errors::ConnectorError> {
+        // since we can make psync call with our reference_id, having connector_transaction_id is not an mandatory criteria
+        Ok(())
+    }
+}
+
 impl ConnectorIntegration<api::PSync, types::PaymentsSyncData, types::PaymentsResponseData>
     for Cryptopay
 {