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: PAZ02HTP3641 Operating System: Windows 2003 5.2.3790 (Service Pack 2) Time: Wed 2016:05:04 12:13:34 Title: Agent_BUS EXEName: Agent_BUS Path: D:\Components\TPO Components Version: 14.94.1 Unattended: True Retained: True StartMode: 1 Thread: 1964 END: AppInfo :337:START: ContextInfo IsInTransaction: True ContextInfo.ActivityId: {71C716CB-7F2E-4D26-BA4D-5E349C4E4C8A} ContextInfo.ContextId: {26FF749F-7F05-4960-842C-D3D05AB2008E} ContextInfo.IsInTransaction: True ContextInfo.TransactionId: {997632B7-AEBF-4257-826F-52EA90322A94} IsSecurityEnabled: False ItemCount: 5 END: ContextInfo :38:START: ADODBErrors END: ADODBErrors :1:0:176:VB Error Source: Agent_BUS ** Computer: PAZ02HTP3641 App Path: D:\Components\TPO Components\Agent_BUS Filename: Contact_RW Function: UpdateContactEmailSubscriptionStatus: