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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message TU156 - Meter reading unit &1 is still used in installations ?

  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 view the installations associated with the meter reading unit.
  
  
  Remove Associations: Once you have identified the installations, you need to either:
  
  Change the meter reading unit for those installations to a different one.
  Delete the installations if they are no longer needed (ensure that this is in line with your business processes).
  
  
  
  Check for Other Dependencies: Ensure that there are no other dependencies or references to the meter reading unit in other parts of the system, such as contracts or billing documents.
  
  
  Retry the Deletion: After removing all associations, you can attempt to delete or modify the meter reading unit again.
  
  
  Related Information:
  
  
  Transaction Codes: You may find it helpful to use transaction codes such as:
  
  EL31: To view and manage meter reading units.
  EL22: To view installations and their associated meter reading units.
  
  
  
  Documentation: Refer to SAP documentation or help files for more detailed instructions on managing meter reading units and installations.
  
  
  Consulting with SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP team for assistance.
  
  
  By following these steps, you should be able to resolve the TU156 error and successfully manage your meter reading units in SAP.