The unsubscription is not successful.

Error message is :
:11:-2147352567:31:Method '~' of object '~' failed:0::0::11:-2147352567:31:Method '~' of object '~' failed:194:START: VBErrorInfo Description: Method '~' of object '~' failed HelpContext: 1000440 HelpFile: LastDllError: 0 Number: -2147352567 (0x80020009) Source: Agent_BUS END: VBErrorInfo :312:START: AppInfo ComputerName: PAZ02HTP3643 Operating System: Windows 2003 5.2.3790 (Service Pack 2) Time: Fri 2016:12:09 21:53:01 Title: Agent_BUS EXEName: Agent_BUS Path: D:\Components\TPO Components Version: 15.30.1 Unattended: True Retained: True StartMode: 1 Thread: 2664 END: AppInfo :337:START: ContextInfo IsInTransaction: True ContextInfo.ActivityId: {722BDA30-39B7-43E8-B841-A08108F346BB} ContextInfo.ContextId: {F2055AFD-DE98-4391-B378-7EBDF24FD2B5} ContextInfo.IsInTransaction: True ContextInfo.TransactionId: {8E76FA4E-E17F-4D92-95AB-BD1A4ED66BD2} IsSecurityEnabled: False ItemCount: 5 END: ContextInfo :38:START: ADODBErrors END: ADODBErrors :1:0:176:VB Error Source: Agent_BUS ** Computer: PAZ02HTP3643 App Path: D:\Components\TPO Components\Agent_BUS Filename: Contact_RW Function: UpdateContactEmailSubscriptionStatus: