How To Fix WL037 - Execution of submethods not permitted (start by external application)

SAP Error Message - Details

• Message type: E = Error

• Message class: WL - Workflow: run-time messages

• Message number: 037

• Message text: Execution of submethods not permitted (start by external application)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WL037 - Execution of submethods not permitted (start by external application) ?

  The SAP error message WL037, which states "Execution of submethods not permitted (start by external application)," typically occurs in the context of workflow execution in SAP. This error indicates that a workflow method is being called in a way that is not allowed, particularly when it is initiated from an external application.
  Cause:
  
  External Invocation: The error usually arises when a workflow method is invoked externally (e.g., through an API or a web service) that is not designed to be executed in that manner. Some methods are intended to be called only within the workflow context.
  Method Restrictions: Certain methods in SAP workflows are restricted from being executed directly to maintain the integrity of the workflow process. This is often a design choice to prevent unintended side effects or inconsistencies.
  Configuration Issues: There may be configuration settings in the workflow that restrict the execution of certain methods based on the context in which they are called.
  
  Solution:
  
  Check Method Invocation: Ensure that the method you are trying to invoke is intended to be called externally. Review the documentation for the workflow and its methods to confirm their intended usage.
  Use Appropriate Methods: If you need to trigger a workflow from an external application, use the appropriate entry points or methods that are designed for external calls. This may involve using a different method or API that is specifically designed for external invocation.
  Workflow Configuration: Review the workflow configuration to ensure that the methods you are trying to call are correctly set up for external access. You may need to adjust the workflow design or settings to allow for the desired functionality.
  Debugging: If you have access to the SAP system, you can use transaction codes like SWI1 (Work Item Selection) or SWI2_FREQ (Work Item Selection with Frequency) to analyze the workflow and identify where the error is occurring.
  Consult Documentation: Refer to SAP documentation or community forums for specific guidance on the workflow methods you are using. There may be known issues or additional configuration steps required.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific workflow or method you are using. SAP Notes often provide solutions or workarounds for common errors.
  Workflow Logs: Review workflow logs for additional context on the error. This can provide insights into what was happening at the time of the error and help identify the root cause.
  SAP Community: Engage with the SAP Community or forums where other users may have encountered similar issues. They can provide insights or solutions based on their experiences.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.