How To Fix MPE_OAN138 - OA &1, version &2 referenced in work instr. assignment &3 &4 is unknown

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_OAN - Operation Activity Network Messages

• Message number: 138

• Message text: OA &1, version &2 referenced in work instr. assignment &3 &4 is unknown

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.

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MPE_OAN138 - OA &1, version &2 referenced in work instr. assignment &3 &4 is unknown ?

  The SAP error message MPE_OAN138 typically indicates that there is an issue with the work instruction assignment in the context of a maintenance or production order. The error suggests that the system cannot find the specified object (in this case, a work instruction) for the given version and assignment.
  Cause:
  
  Missing Work Instruction: The specified work instruction or its version may not exist in the system.
  Incorrect Assignment: The work instruction assignment may be incorrectly configured or not properly linked to the order.
  Data Inconsistency: There may be inconsistencies in the data, such as missing master data or incorrect settings in the configuration.
  Authorization Issues: The user may not have the necessary authorizations to access the work instruction.
  
  Solution:
  
  Check Work Instruction: Verify that the work instruction with the specified version exists in the system. You can do this by navigating to the relevant transaction (e.g., IW31/IW32 for maintenance orders) and checking the work instruction details.
  Review Assignment: Ensure that the work instruction is correctly assigned to the work instruction assignment in the order. Check the configuration settings to ensure they are correct.
  Data Consistency Check: Run consistency checks on the relevant master data to ensure that all necessary data is present and correctly configured.
  Authorization Check: Ensure that the user has the necessary authorizations to view and access the work instruction. This may involve checking user roles and permissions.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the error message and related transactions.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as IW31 (Create Order), IW32 (Change Order), and IW33 (Display Order) to manage work instructions and orders.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide specific fixes or workarounds.
  Support: If the issue persists, consider reaching out to your SAP support team or consulting with SAP support for further assistance.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution.