How To Fix SWF_HTTP109 - Self-defined types are not supported (type reference '&1')

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_HTTP - Web Services in the Workflow: Server Functions

• Message number: 109

• Message text: Self-defined types are not supported (type reference '&1')

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 SWF_HTTP109 - Self-defined types are not supported (type reference '&1') ?

  The SAP error message SWF_HTTP109 indicates that there is an issue with the use of self-defined types in a workflow context, specifically when trying to use a type reference that is not supported. This error typically arises in scenarios involving workflows, particularly when using custom data types that are not recognized by the workflow engine.
  Cause:
  
  Self-defined Types: The error occurs when a workflow attempts to use a custom or self-defined data type that is not supported by the workflow engine. This can happen if the type is not properly defined or registered in the system.
  Incompatibility: The workflow may be trying to reference a type that is incompatible with the expected data types in the workflow context.
  Data Type Visibility: The custom type may not be visible or accessible in the context where it is being used, possibly due to scope or package issues.
  
  Solution:
  
  Check Type Definition: Ensure that the self-defined type is correctly defined in the ABAP Dictionary (SE11). Verify that it is a valid type and that it is properly activated.
  Use Standard Types: If possible, consider using standard SAP data types instead of custom types. This can help avoid compatibility issues.
  Workflow Context: Ensure that the custom type is accessible in the workflow context. You may need to adjust the visibility or scope of the type.
  Type Registration: If the type is defined in a custom namespace, ensure that it is properly registered and that the workflow has access to it.
  Debugging: Use transaction SWI1 to analyze the workflow instance and check for any additional error messages or logs that may provide more context about the issue.
  Consult Documentation: Review SAP documentation or notes related to workflows and custom types for any specific guidelines or limitations.
  
  Related Information:
  
  Workflow Customization: When customizing workflows, it's essential to adhere to SAP's guidelines regarding data types and structures.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional insights.
  Community Forums: Consider reaching out to SAP community forums or support channels for assistance from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the SWF_HTTP109 error and implement a suitable solution.