The unsubscription is not successful.

Error message is :
:5:65010:23:Agent: Record not found:0::0::5:65010:23:Agent: Record not found:176:START: VBErrorInfo Description: Agent: Record not found HelpContext: 1065010 HelpFile: LastDllError: 0 Number: 65010 (0xFDF2) Source: Agent_BUS END: VBErrorInfo :323:START: AppInfo ComputerName: PAZ02HTP3646 Operating System: Unknown_OS PlatformID:2 6.1.7601 (Service Pack 1) Time: Tue 2017:06:27 20:27:07 Title: Agent_BUS EXEName: Agent_BUS Path: D:\Components\TPO Components Version: 15.50.2 Unattended: True Retained: True StartMode: 1 Thread: 3348 END: AppInfo :337:START: ContextInfo IsInTransaction: True ContextInfo.ActivityId: {89BCB663-3ADB-47BB-8E70-425FED9C45A1} ContextInfo.ContextId: {1D653BD8-32CE-423C-8F60-1DCA58FD47D6} ContextInfo.IsInTransaction: True ContextInfo.TransactionId: {3E839229-6C46-4FA3-943F-F458550C05A9} IsSecurityEnabled: False ItemCount: 5 END: ContextInfo :38:START: ADODBErrors END: ADODBErrors :1:0:303:VB Error Source: Agent_BUS ** Computer: PAZ02HTP3646 App Path: D:\Components\TPO Components\Agent_BUS Filename: Contact_RW Function: UpdateContact ** Computer: PAZ02HTP3646 App Path: D:\Components\TPO Components\Agent_BUS Filename: Contact_RW Function: UpdateContactEmailSubscriptionStatus: