How To Fix MPE_OAN120 - Unknown type &1 for event &2, version &3

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_OAN - Operation Activity Network Messages

• Message number: 120

• Message text: Unknown type &1 for event &2, version &3

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_OAN120 - Unknown type &1 for event &2, version &3 ?

  The SAP error message MPE_OAN120 indicates that there is an issue with an unknown type for a specific event and version in the context of the SAP system. This error typically arises in the context of the SAP Event Management or similar modules where event types and versions are defined.
  Cause:
  
  Unknown Event Type: The event type specified in the error message does not exist in the system or is not properly defined.
  Version Mismatch: The version of the event type being referenced may not be valid or may not exist in the system.
  Configuration Issues: There may be configuration issues in the event management settings or related modules.
  Data Inconsistency: There could be inconsistencies in the data, such as missing entries in the database tables that define event types and versions.
  
  Solution:
  
  
  Check Event Type Definition:
  
  Go to the relevant transaction (e.g., SPRO) and navigate to the configuration settings for event management.
  Verify that the event type specified in the error message is correctly defined and active.
  
  
  
  Verify Version:
  
  Ensure that the version of the event type being referenced is valid and exists in the system.
  Check if there are any recent changes or updates that might have affected the event type or its version.
  
  
  
  Review Custom Code:
  
  If there is any custom code or enhancements related to event handling, review it to ensure that it is correctly referencing the event types and versions.
  
  
  
  Check for Data Consistency:
  
  Use transaction codes like SE11 to check the relevant database tables for the event types and versions.
  Look for any missing or inconsistent entries that could be causing the error.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific module you are working with for any known issues or additional troubleshooting steps.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. Provide them with the error message details and any relevant context.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SPRO (Customizing), SE11 (Data Dictionary), and SE80 (Object Navigator) for troubleshooting.
  SAP Notes: Search for SAP Notes related to MPE_OAN120 for any specific patches or updates that may address this issue.
  Event Management Documentation: Review the SAP Event Management documentation for best practices in defining and managing event types and versions.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution.