Diagnosis
You have deleted parameter group &V1& (&V2&).

System Response
The system removes the parameter group from the list of availableparameter groups and designates it for final deletion from the databasis. The final deletion takes place when ending the planning session,or when saving the planning objects.

Procedure
If you want to reverse the deletion, then exit the planning sessionwithout saving. After that, the parameter group is available again.