How To Fix MPE_OAN145 - No start event found in OAN &1, version &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_OAN - Operation Activity Network Messages

• Message number: 145

• Message text: No start event found in OAN &1, version &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.

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_OAN145 - No start event found in OAN &1, version &2 ?

  The SAP error message MPE_OAN145 with the description "No start event found in OAN &1, version &2" typically occurs in the context of SAP Process Integration (PI) or SAP Process Orchestration (PO) when dealing with orchestration scenarios. This error indicates that the system is unable to find a start event for the specified orchestration application name (OAN) and version.
  Cause:
  
  Missing Start Event: The orchestration application (OAN) specified does not have a defined start event. This could be due to a configuration issue or an incomplete setup of the orchestration.
  Incorrect Version: The version specified in the error message may not correspond to a version that has a start event defined.
  Deployment Issues: The orchestration might not have been properly deployed or activated in the system.
  Configuration Errors: There may be issues in the configuration of the process or the integration scenario that prevent the start event from being recognized.
  
  Solution:
  
  
  Check Orchestration Configuration:
  
  Verify that the orchestration application (OAN) is correctly configured and that it includes a start event.
  Ensure that the start event is properly defined in the process model.
  
  
  
  Validate Version:
  
  Confirm that you are using the correct version of the orchestration application. If necessary, check the available versions in the system and ensure that the one you are referencing has a start event.
  
  
  
  Deployment Verification:
  
  Ensure that the orchestration application has been deployed correctly. You may need to redeploy the application if there are issues.
  Check the deployment logs for any errors that might indicate why the start event is not recognized.
  
  
  
  Review Integration Scenarios:
  
  If the orchestration is part of a larger integration scenario, review the entire scenario to ensure that all components are correctly configured and that there are no missing links.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on configuring orchestration applications and defining start events.
  
  
  
  Testing:
  
  After making any changes, test the orchestration to ensure that the start event is now recognized and that the process can be initiated successfully.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed.
  SAP Process Orchestration Documentation: Review the official SAP documentation for Process Orchestration for best practices and configuration guidelines.
  
  If the issue persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.