Anybody have any idea what this error means and how to fix it? I am trying to cancel two PO lines that are obsolete. When I try to cancel, we get this error. Initiated from a Work Task Material Requisition. Work task is in work done status.

Anybody have any idea what this error means and how to fix it? I am trying to cancel two PO lines that are obsolete. When I try to cancel, we get this error. Initiated from a Work Task Material Requisition. Work task is in work done status.
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.