Extended Notification for PR workflow

Hi,

We have configured the Extended Notification for PR workflow purpose .When PR created the first approver should get Notification of Workitem and Once First approvers released the PR and then same second approver should get Notification in his Outlook. But when i ran the Program # SWN_SELSEN,  I got Bunch of emails in outlook , That Notifications related Idoc, Delivery and Workflow also.

But I need only Notification for PR workflow.

Shall i make this configuration only specific to PR/PO Workflow,

These are the mails we got in outlook, when i ran program.

Entry in outbound table not found

Requisition release 10000268 00020

Delivery has failed to these recipients or groups:

Thanks

sapman man