Diagnosis
You are processing a meter reading unit that is not allocated todynamic scheduling. Notethat either both the portion and the corresponding meter reading unitsmust be allocated to dynamic scheduling, or neither the portion nor itsmeter reading units must be allocated to dynamic scheduling.
Therefore, you can only enter a portion that is allocated to dynamicscheduling if the meter reading unit is also allocated to dynamicscheduling. This is only possible if no more schedule records exist forthe meter reading unit.

Procedure
Delete all the schedule records of the meter reading unit first. Notethat meter reading orders may already have been created for theseschedule records.
Once you have deleted the schedule records, you can enter the newportion. When you do this, the reference to dynamic scheduling isestablished automatically.