Diagnosis
You have canceled the Dyn. scheduling indicator (dynamicscheduling), so that this portion can no longer be used for dynamicscheduling. You can only cancel this indicator if no schedule recordsexist for the portion or for the meter reading units belonging to thatportion.

System Response
An error message is displayed.

Procedure
If you do wish to change the portion in this way, delete the schedulerecords of the portion and of the corresponding meter reading unitsfirst. You can find out which meter reading units belong to the portionby viewing the where-used list.