Diagnosis
Either the requested query, or one of the characteristic valuevariables with a replacement path from the query results, or its querydoes not exist or was deleted.

System Response
The system cannot execute the requested query.

Procedure
Check that the requested query still exists.
Then check whether the requested query contains characteristic valuevariables with a replacement path from the results of the query, andwhether these queries also exist.
If neccesary, create the missing query again and reassign the query tothe variables.