SAP Message WL891 - Work queue & cannot be deleted

Diagnosis
The work queue could not be deleted.

System Response
The specified work queue was not deleted. Individual lines of this workqueue may have been partially deleted.

Procedure
Check whether this is the case and if so which parts of the work queuehave already been deleted. Remove possible inconsistencies by deletingindividual lines step-by-step.
INCLUDE NA_WF-ADMINISTRATOR OBJECT DOKU ID TX