How To Fix OM127 - Collection of messages was not activated

OM127 - Overview

• Message type: E = Error

• Message class: OM - Customizing Materialwirtschaft

• Message number: 127

• Message text: Collection of messages was not activated

What causes this issue?

A system error occurred.

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?

Please repeat the action you have taken. If this error occurs again,
contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OM127 - Collection of messages was not activated ?

  The SAP error message OM127, which states "Collection of messages was not activated," typically occurs in the context of message handling in SAP, particularly when dealing with message classes or message types that are not properly configured or activated.
  
  Cause:
  
  Message Class Not Activated: The message class that is supposed to handle the messages has not been activated in the system.
  
  Configuration Issues: There may be issues in the configuration settings related to the message handling or the specific application area.
  Transport Issues: If the message class was recently transported from another system, it may not have been activated in the target system.
  Authorization Issues: The user may not have the necessary authorizations to access or activate the message class.
  
  
  Solution:
  
  
  Activate the Message Class:
  
  Go to transaction code SE91 (Message Class).
  Check if the message class related to the error is listed and activated.
  If it is not activated, activate it.
  
  
  
  Check Configuration:
  
  Review the configuration settings related to the specific