diff --git a/supplychain/init.py b/supplychain/init.py
index 92c15bd..39939e4 100644
--- a/supplychain/init.py
+++ b/supplychain/init.py
@@ -11,7 +11,7 @@ from appPublic.dictObject import DictObject
 from sqlor.dbpools import DBPools
 from ahserver.serverenv import ServerEnv
 from ahserver.filestorage import FileStorage
-from filemgr.filemgr import FileMgr
+from filemgr.filemgr import FileMgr, FileMgrResult
 
 
 class ContractAttachMgr(FileMgr):
@@ -28,6 +28,10 @@ class ContractAttachMgr(FileMgr):
     async def get_organization_quota(self, sor, orgid):
         """Unlimited quota for contract attachments."""
         return 1000000000, '9999-12-31'
+
+    async def file_uploaded(self, request, ns, userid):
+        """Return success result after file uploaded."""
+        return FileMgrResult('success', 'file added')
 MODULE_NAME = "supplychain"