How To Fix MPE_OAN190 - Action handler parameter &1 not found for sequence number &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_OAN - Operation Activity Network Messages

• Message number: 190

• Message text: Action handler parameter &1 not found for sequence number &2

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MPE_OAN190 - Action handler parameter &1 not found for sequence number &2 ?

  The SAP error message MPE_OAN190 indicates that there is an issue with the action handler parameter in a specific sequence number. This error typically arises in the context of SAP's Multi-Processing Environment (MPE) or when dealing with action handlers in workflows or processes.
  Cause:
  
  Missing Action Handler Parameter: The error suggests that the system is trying to access an action handler parameter that does not exist or is not defined for the specified sequence number.
  Configuration Issues: There may be a misconfiguration in the workflow or process definition where the action handler is expected to be defined.
  Data Integrity Issues: The data being processed may be incomplete or corrupted, leading to the absence of the expected parameters.
  Versioning Issues: If there have been recent changes or updates to the system, the action handler parameters may not have been updated accordingly.
  
  Solution:
  
  Check Configuration: Review the configuration of the action handler and ensure that all required parameters are defined correctly for the specified sequence number.
  Validate Data: Ensure that the data being processed is complete and valid. Check for any missing or incorrect entries that could lead to this error.
  Review Workflow Definitions: If this error occurs within a workflow, check the workflow definitions to ensure that all action handlers are correctly defined and linked to the appropriate sequence numbers.
  Debugging: Use debugging tools to trace the execution flow and identify where the action handler parameter is being called. This can help pinpoint the exact location of the issue.
  Consult Documentation: Refer to SAP documentation or notes related to the specific module or process you are working with for any known issues or additional troubleshooting steps.
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP support for further assistance.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Transaction Codes: Familiarize yourself with transaction codes related to workflow management or process configuration, such as SWDD (Workflow Builder) or SWI1 (Work Item Selection).
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to diagnose and resolve the MPE_OAN190 error effectively.