Error while saving logistic data plant unassigments

What causes this issue?

The transaction was aborted after an error was detected.

System Response

Your changes will be lost if you attempt to save again or if you shut
down the application.

How to fix this error?

Contact your system administrator in order to retrieve your data.

Procedure for System Administrators

Logistic plant unassignment data are stored in internal table
t_wlositeref_to_del.

Error message extract from SAP system. Copyright SAP SE.