Diagnosis
The settlement unit has a master record in table VIAK03, but does nothave a valid assignment to any rental units (table VIAK05).
Another possibility:
A master settlement unit is assigned to a settlement unit that wasended, and the ending date is before the period start date of theservice charge settlement.

System Response
Processing terminates.

Procedure
Check the participation ID of the settlement unit. Correct the validityperiod of the rental units contained in the participation ID. At leastone rental unit has to be valid over the entire settlement period.
Also check the availability of the assigned rental units.
You may need to change the valid-to date of the settlement unit.
Another possibility:
You have to make new time assignments for all relevant settlement unitsin the master settlement unit.