How To Fix /MVA/AMQ_MIG_MSG011 - Message number &1 has been assigned more than once

SAP Error Message - Details

• Message type: E = Error

• Message class: /MVA/AMQ_MIG_MSG -

• Message number: 011

• Message text: Message number &1 has been assigned more than once

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /MVA/AMQ_MIG_MSG011 - Message number &1 has been assigned more than once ?

  The SAP error message /MVA/AMQ_MIG_MSG011 indicates that a message number has been assigned more than once in the context of the SAP Message Management System. This typically occurs during the migration or configuration of message handling in SAP systems, particularly when dealing with message classes or message numbers that are expected to be unique.
  Cause:
  
  Duplicate Message Numbers: The primary cause of this error is that the same message number has been defined in the system more than once within the same message class or across different message classes.
  Migration Issues: If you are migrating from one system to another or importing message classes, there may be conflicts if the same message numbers are used in both systems.
  Configuration Errors: Incorrect configuration or manual entry errors can lead to duplicate message assignments.
  
  Solution:
  
  Identify Duplicates: Use transaction codes like SE91 (Message Class Maintenance) to check the message classes and identify where the duplicate message numbers are defined.
  Modify Message Numbers: Once you identify the duplicates, you can either:
  
  Change the message number in one of the message classes to ensure uniqueness.
  Delete the duplicate entry if it is not needed.
  
  
  Check Transport Requests: If the issue arose during a transport, check the transport requests to ensure that they do not contain conflicting message definitions.
  Consistency Check: After making changes, perform a consistency check to ensure that there are no remaining duplicates.
  Testing: After resolving the issue, test the relevant functionality to ensure that the changes have not affected other parts of the system.
  
  Related Information:
  
  Message Classes: In SAP, message classes are used to group related messages. Each message within a class is assigned a unique number.
  Transaction Codes: Familiarize yourself with transaction codes like SE91 (for message classes) and SE80 (for object navigator) to manage and troubleshoot message definitions.
  Documentation: Refer to SAP documentation or help resources for more detailed guidance on message management and troubleshooting.
  
  If the problem persists after following these steps, consider reaching out to SAP support or consulting with an SAP expert for further assistance.