diff --git a/api/events/event_handlers/update_provider_when_message_created.py b/api/events/event_handlers/update_provider_when_message_created.py
index d787b23fac..9efe9a79af 100644
--- a/api/events/event_handlers/update_provider_when_message_created.py
+++ b/api/events/event_handlers/update_provider_when_message_created.py
@@ -133,9 +133,10 @@ def handle(sender: Message, **kwargs):
             system_configuration=system_configuration,
             model_name=model_config.model,
         )
-
+        logger.info("used_quota: %s", used_quota)
         if used_quota is not None:
             if provider_configuration.system_configuration.current_quota_type == ProviderQuotaType.TRIAL:
+                logger.info("deduct credits")
                 from services.credit_pool_service import CreditPoolService
 
                 CreditPoolService.check_and_deduct_credits(
@@ -143,6 +144,7 @@ def handle(sender: Message, **kwargs):
                     credits_required=used_quota,
                 )
             else:
+                logger.info("update provider quota")
                 quota_update = _ProviderUpdateOperation(
                     filters=_ProviderUpdateFilters(
                         tenant_id=tenant_id,
diff --git a/api/services/credit_pool_service.py b/api/services/credit_pool_service.py
index 2bf9f4118f..f72686b9ff 100644
--- a/api/services/credit_pool_service.py
+++ b/api/services/credit_pool_service.py
@@ -1,3 +1,4 @@
+import logging
 from typing import Optional
 
 from sqlalchemy import update
@@ -7,6 +8,8 @@ from core.errors.error import QuotaExceededError
 from extensions.ext_database import db
 from models import TenantCreditPool
 
+logger = logging.getLogger(__name__)
+
 
 class CreditPoolService:
     @classmethod
@@ -72,8 +75,9 @@ class CreditPoolService:
         cls,
         tenant_id: str,
         credits_required: int,
-    ) -> bool:
+    ):
         """check and deduct credits"""
+        logger.info("check and deduct credits")
         pool = cls.get_pool(tenant_id)
         if not pool:
             raise QuotaExceededError("Credit pool not found")
@@ -93,8 +97,6 @@ class CreditPoolService:
             stmt = update(TenantCreditPool).where(*where_conditions).values(**update_values)
             db.session.execute(stmt)
 
-        return True
-
     @classmethod
     def check_deduct_credits(cls, tenant_id: str, credits_required: int) -> bool:
         """check and deduct credits"""