Diagnosis
A reference is being made to a single selection that is marked fordeletion.

System Response
The system will delete the reference to the single selection that ismarked for deletion. A reference to a new (empty) single selection willbe created to restore the formal consistency in the customizingsettings.

Procedure
If you save the settings, the system will store the reference to the newsingle selection in the database. You can save only if the singleselection is not being used elsewhere. Check the new single selectioncreated by the system and adjust it if necessary.