Diagnosis
A characteristic was removed from the level after definition of theplanning function and/or parameter group. The system cannot determinewhether this characteristic is necessary for execution.

Procedure
First edit the planning function and then the parameter group in changemode:
Remove the no longer existing characteristic from the definition of theplanning function and the parameter group.
Then save the changes. Also save even if nothing has changed. This hasthe effect that the superfluous characteristic is deleted from theCustomizing tables of the planning function and the parameter group.