Diagnosis
You attempted to delete a field from the functional area whose textfield is still used in queries.

Procedure
Before deleting a field from a functional area, it must be guaranteedthat this field is no longer being used in a query. You can display allqueries, that use this field, using the directory functions. Changethese queries in such a way that the field can no longer be used, ordelete these queries. You can then delete the field from the functionalarea.