How To Fix MPE_OAN126 - Reference material assignment &1, plant &2 for OA &3 version &4 not found

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_OAN - Operation Activity Network Messages

• Message number: 126

• Message text: Reference material assignment &1, plant &2 for OA &3 version &4 not found

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MPE_OAN126 - Reference material assignment &1, plant &2 for OA &3 version &4 not found ?

  The SAP error message MPE_OAN126 indicates that there is an issue with the reference material assignment for an operational asset (OA) in a specific plant. This error typically arises when the system cannot find the required reference material assignment for the specified operational asset version in the given plant.
  Cause:
  
  Missing Reference Material Assignment: The most common cause is that the reference material assignment for the specified operational asset does not exist in the system for the given plant and version.
  Incorrect Configuration: There may be a configuration issue where the reference material is not properly set up in the system.
  Data Inconsistency: There could be inconsistencies in the data, such as missing entries in the relevant tables.
  Versioning Issues: The version specified may not be valid or may not have been created yet.
  
  Solution:
  
  
  Check Reference Material Assignment:
  
  Navigate to the relevant transaction in SAP (e.g., transaction code OAN1 or OAN2) to check if the reference material assignment exists for the specified operational asset, plant, and version.
  If it does not exist, you will need to create the reference material assignment.
  
  
  
  Create or Update Reference Material:
  
  If the assignment is missing, create a new reference material assignment for the operational asset in the specified plant and version.
  Ensure that all required fields are filled out correctly.
  
  
  
  Verify Configuration:
  
  Check the configuration settings related to asset management and reference materials to ensure they are set up correctly.
  Consult with your SAP configuration team if necessary.
  
  
  
  Data Consistency Check:
  
  Run data consistency checks to identify any discrepancies in the asset data.
  Use transaction codes like OAWD (Asset Explorer) to review the asset data.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to this error message for any specific guidance or patches that may be applicable.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OAN1 (Create Reference Material), OAN2 (Change Reference Material), and OAWD (Asset Explorer).
  SAP Notes: Search for SAP Notes related to MPE_OAN126 for any known issues or fixes.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to create or modify reference material assignments.
  
  By following these steps, you should be able to resolve the error message MPE_OAN126 and ensure that the reference material assignment is correctly set up in your SAP system.