Diagnosis
You have entered a service charge key which is not assigned tothe rental agreement rental unit on the specified date.

System Response
The entry will be refused by the system.

Procedure
There are three reasons for the error:
1. You have entered the incorrect service charge key.
Correct the service charge key.
2. Errors were made when you defined the calculation unit and the
allocation between the service charge keys and rental units
on a specific date.
Check the calculation unit definition.
3. The 'Valid-as-from' date has been entered incorrectly. The
definition of the calculation unit has to contain the rental
agreement rental unit on the specified date.
Check the 'Valid-as-from' date.