The notification has been assigned to an entirely different user

Summary:

Hi,

We have a supplier operation in the work order.

When the user released the work order, a purchase requisition for OSP is created automatically.

The User 'A' created the work order had a supplier peration and released the work order.

But for some reason, purchase requisition was not created for OSP.

And the notification state 'A purchase requisition wasn't created. On the Review Supplier Operation Details page, create a purchase requisition for the required quantity for this supplier operation.' had been assgined to unexpected user ( not User 'A' ).

Why that notification was assigned to unexpteced user?

Is there any setup for this??