How To Fix TU023 - Cannot maintain fields 'MR Together with' and 'Main MRU' at the same time

SAP Error Message - Details

• Message type: E = Error

• Message class: TU - Billing/Scheduling/Budget Billing

• Message number: 023

• Message text: Cannot maintain fields 'MR Together with' and 'Main MRU' at the same time

What causes this issue?

It is not possible to maintain both these fields at the same time. A
meter reading unit must be either a main meter reading unit or an
allocated meter reading unit, or neither of these.

System Response

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

How to fix this error?

Maintain either the "Together with" field or the "Main MRU" field, or
leave both fields blank.

Error message extract from SAP system. Copyright SAP SE.