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 :323:START: AppInfo ComputerName: PAZ02HTP3645 Operating System: Unknown_OS PlatformID:2 6.1.7601 (Service Pack 1) Time: Sat 2017:10:21 21:39:26 Title: Agent_BUS EXEName: Agent_BUS Path: D:\Components\TPO Components Version: 15.50.2 Unattended: True Retained: True StartMode: 1 Thread: 4820 END: AppInfo :337:START: ContextInfo IsInTransaction: True ContextInfo.ActivityId: {6065B152-39C3-40A0-846F-50FE630EB001} ContextInfo.ContextId: {16D30DC2-9A4A-486A-81CE-162343F74BBF} ContextInfo.IsInTransaction: True ContextInfo.TransactionId: {11E4AB93-EDA2-4EE5-956C-B809BC7B27F7} IsSecurityEnabled: False ItemCount: 5 END: ContextInfo :38:START: ADODBErrors END: ADODBErrors :1:0:176:VB Error Source: Agent_BUS ** Computer: PAZ02HTP3645 App Path: D:\Components\TPO Components\Agent_BUS Filename: Contact_RW Function: UpdateContactEmailSubscriptionStatus: