Diagnosis
The cursor was not placed on a valid entry in the list of servicecharge key when selecting the display function or maintenance of thesettlement variants on the level of the recipient key.

System Response
You do not go to the list of the recipient key

Procedure
Before selection, place the cursor on the required function on a fieldof the list entries belonging to the recipient key you wish to seedisplayed. If no service key is entered in the list, i.e. the list isblank or the service charge key required does not exist in the list,the then first of the all relevant settlement unit must be created inthe dialog for definition of the settlement units.