The order says Pending Approval, but no approver can find it in their worklist. The approval task behind the order is gone, so there is nothing for anyone to approve.
Oracle has documented orders that stay in Pending Approval after the approval task is no longer available. The status still says waiting, but the workflow that should be waiting has stopped.
My Oracle Support notes, for readers with access. We do not reproduce their content.
Sources Written in plain words from Oracle’s public documentation and the support notes and forum reports listed above. Not yet checked against a live instance by our reviewer. Navigation and behavior vary by configuration; verify in your own instance and test before acting.