How To Fix MPE_OAN170 - Work instruction &1, version &2 not referenced in the OAN

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_OAN - Operation Activity Network Messages

• Message number: 170

• Message text: Work instruction &1, version &2 not referenced in the OAN

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message MPE_OAN170 - Work instruction &1, version &2 not referenced in the OAN ?

  The SAP error message MPE_OAN170 indicates that a specific work instruction (identified by &1) and its version (identified by &2) are not referenced in the Operational Activity Network (OAN). This error typically arises in the context of maintenance planning or production processes where work instructions are expected to be linked to specific operational activities.
  Cause:
  
  Missing Reference: The work instruction may not have been properly linked to the OAN, which means that the system cannot find the necessary association to execute the task.
  Incorrect Version: The version of the work instruction being referenced may not be valid or may not exist in the system.
  Data Inconsistency: There may be inconsistencies in the data, such as missing entries in the database or issues with the configuration of the work instructions.
  Authorization Issues: Sometimes, the user may not have the necessary permissions to view or access the work instruction.
  
  Solution:
  
  Check Work Instruction: Verify that the work instruction &1 and its version &2 exist in the system. You can do this by navigating to the relevant transaction codes (e.g., IW31/IW32 for work orders) and checking the details.
  Link Work Instruction to OAN: If the work instruction is not linked to the OAN, you will need to create the necessary association. This can typically be done in the maintenance planning or production planning module.
  Update Version: Ensure that you are using the correct version of the work instruction. If the version is outdated or incorrect, update it to the latest version that is valid and linked to the OAN.
  Data Consistency Check: Run consistency checks or reports to identify any discrepancies in the data. This may involve checking for missing entries or errors in the configuration.
  Authorization Check: Ensure that the user has the necessary authorizations to access the work instruction. If not, contact your SAP security administrator to grant the required permissions.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as IW31 (Create Order), IW32 (Change Order), and OAN-related transactions.
  SAP Notes: Check for any SAP Notes related to this error message for additional guidance or patches that may resolve the issue.
  Documentation: Review SAP documentation on work instructions and OAN to understand the expected relationships and configurations.
  Support: If the issue persists after following the above steps, consider reaching out to SAP support or your internal SAP support team for further assistance.
  
  By following these steps, you should be able to resolve the MPE_OAN170 error and ensure that your work instructions are properly referenced in the Operational Activity Network.