How To Fix WUF078 - Type of parameter &1 is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: WUF -

• Message number: 078

• Message text: Type of parameter &1 is not supported

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 WUF078 - Type of parameter &1 is not supported ?

  The SAP error message WUF078, which states "Type of parameter &1 is not supported," typically occurs in the context of SAP Workflow or when dealing with workflow-related parameters. This error indicates that the system has encountered a parameter type that it does not recognize or support in the current context.
  Cause:
  
  Unsupported Parameter Type: The parameter type specified in the workflow or function module is not valid or recognized by the system.
  Configuration Issues: There may be a misconfiguration in the workflow definition or the parameters being passed to a function module.
  Version Compatibility: The error may arise if there are compatibility issues between different versions of SAP components or if the system is not updated to support certain parameter types.
  Custom Development: If there are custom workflows or enhancements, the parameter types used may not be properly defined or supported.
  
  Solution:
  
  Check Parameter Definition: Review the workflow definition and ensure that all parameters are correctly defined and supported. Verify that the parameter type matches the expected type in the workflow.
  Update Workflow: If the workflow is outdated or incorrectly configured, consider updating it to use supported parameter types.
  Review Function Module: If the error occurs when calling a function module, check the function module's interface to ensure that the parameters being passed are of the correct type.
  Consult Documentation: Refer to SAP documentation or the relevant transaction codes (like SWDD for workflow definitions) to understand the supported parameter types.
  Debugging: Use debugging tools to trace the workflow execution and identify where the unsupported parameter type is being introduced.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide guidance on parameter types.
  
  Related Information:
  
  Transaction Codes: 
  
  SWDD (Workflow Builder)
  SWI1 (Work Item Selection)
  SWI2_FREQ (Work Item Selection - Frequency)
  
  
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if it involves custom developments or complex workflows.
  
  By following these steps, you should be able to identify the cause of the WUF078 error and implement a suitable solution.