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

TU023 - Overview

• 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.

TU023 - Details

• The SAP error message TU023, which states "Cannot maintain fields 'MR Together with' and 'Main MRU' at the same time," typically occurs in the context of maintaining material master data, particularly in the area of material requirements planning (MRP) or when dealing with material types that have specific settings.
  
  Cause:
  This error arises when there is an attempt to set both the "MR Together with" and "Main MRU" fields simultaneously in the material master record. These fields are mutually exclusive, meaning that you can only maintain one of them at a time. The "MR Together with" field is used to specify a grouping for MRP purposes, while the "Main MRU" (Material Requirements Unit) field is used to define the primary unit of measure for MRP calculations.
  
  Solution:
  To resolve this error, you need to ensure that you are only maintaining one of the two fields at a time. Here are the steps to follow:
  
  
  Access