How To Fix TU156 - Meter reading unit &1 is still used in installations

TU156 - Overview

• Message type: E = Error

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

• Message number: 156

• Message text: Meter reading unit &1 is still used in installations

What causes this issue?

The meter reading unit you wish to delete is still used in
installtions. Deletion is therefore not permitted. To determine the
installations concerned, see the where-used list.

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?

Error message extract from SAP system. Copyright SAP SE.

TU156 - Details

• The SAP error message TU156 indicates that a meter reading unit (MRU) is still being used in installations, which prevents you from deleting or modifying that unit. This error typically arises in the context of SAP IS-U (Industry Solution for Utilities) when you attempt to delete a meter reading unit that is still linked to active installations or devices.
  
  Cause:
  The primary cause of this error is that the meter reading unit you are trying to delete or modify is still associated with one or more installations or devices in the system. This association means that the system cannot allow changes to the meter reading unit until all references to it are removed.
  
  Solution:
  To resolve this error, you need to follow these steps:
  
  
  Identify the Installations: Determine which installations or devices are still using the meter reading unit. You can do this by running a report or using transaction codes that allow you to