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: PAZ02HTP3645 Operating System: Unknown_OS PlatformID:2 6.1.7601 (Service Pack 1) Time: Wed 2018:07:18 05:26:05 Title: Agent_BUS EXEName: Agent_BUS Path: D:\Components\TPO Components Version: 16.0.0 Unattended: True Retained: True StartMode: 1 Thread: 3104 END: AppInfo :337:START: ContextInfo IsInTransaction: True ContextInfo.ActivityId: {2FC3843C-3F59-4695-9FA5-0237015482B8} ContextInfo.ContextId: {19BD454E-E731-405E-B276-29F9E20270BA} ContextInfo.IsInTransaction: True ContextInfo.TransactionId: {B6CEB930-7CB4-4EE3-BA35-FEF3DFE4F43C} IsSecurityEnabled: False ItemCount: 5 END: ContextInfo :38:START: ADODBErrors END: ADODBErrors :1:0:303:VB Error Source: Agent_BUS ** Computer: PAZ02HTP3645 App Path: D:\Components\TPO Components\Agent_BUS Filename: Contact_RW Function: UpdateContact ** Computer: PAZ02HTP3645 App Path: D:\Components\TPO Components\Agent_BUS Filename: Contact_RW Function: UpdateContactEmailSubscriptionStatus: