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 :322:START: AppInfo ComputerName: PAZ02HTP3646 Operating System: Unknown_OS PlatformID:2 6.1.7601 (Service Pack 1) Time: Sat 2017:12:16 22:51:34 Title: Agent_BUS EXEName: Agent_BUS Path: D:\Components\TPO Components Version: 15.70.1 Unattended: True Retained: True StartMode: 1 Thread: 464 END: AppInfo :337:START: ContextInfo IsInTransaction: True ContextInfo.ActivityId: {668197DB-CD9D-4682-AE54-D310E91CD3E5} ContextInfo.ContextId: {297F3143-57B9-46F6-99C2-BF72D57F6739} ContextInfo.IsInTransaction: True ContextInfo.TransactionId: {2914164F-5555-42E2-AAF5-049B21672E85} 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: