At least one of the selected sched. recs has no scheduled MR cat.

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

INCLUDE ISU_VERARB OBJECT DOKU ID TX

How to fix this error?

Check the schedule records of the meter reading units specified.

Error message extract from SAP system. Copyright SAP SE.