How To Fix WD393 - Function not allowed for step type chosen

SAP Error Message - Details

• Message type: E = Error

• Message class: WD - Workflow definition

• Message number: 393

• Message text: Function not allowed for step type chosen

What causes this issue?

No maintenance interface exists for your chosen step type. This means
that not all step types can be configured in the workflow configuration
for example.,,

System Response

This is confirmed by the system with this message.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WD393 - Function not allowed for step type chosen ?

  The SAP error message WD393: "Function not allowed for step type chosen" typically occurs in the context of Web Dynpro ABAP when working with Web Dynpro component controllers, views, or window configurations involving navigation or step processing.
  
  Cause
  This error arises when you try to assign or use a function (action, navigation, or method) that is not permitted for the specific step type you have chosen in a Web Dynpro component or application. 
  In Web Dynpro, a step can be of different types, such as:
  
  View step: Represents a view in a window.
  Plug step: Represents a plug (navigation target).
  Custom step: A user-defined step type.
  
  Each step type supports only certain functions or operations. For example, you cannot assign navigation functions to a step type that does not support navigation, or you cannot assign UI element functions to a step that is not a view.
  Common scenarios causing this error:
  
  Assigning a navigation function to a step that is not a plug or navigation step.
  Using a function that is only valid for a view step on a plug step.
  Misconfiguration in the Web Dynpro window or component controller where the step type does not match the intended function.
  
  
  Solution
  To resolve the error:
  
  
  Check the step type in your Web Dynpro component or window configuration:
  
  Go to the Web Dynpro component in the SAP GUI or Eclipse.
  Open the window or component controller where the step is defined.
  Verify the step type (View, Plug, or Custom).
  
  
  
  Verify the function assigned to the step:
  
  Ensure that the function (navigation, action, method) you are trying to assign or call is allowed for the step type.
  For example, navigation functions should be assigned to plug steps, and UI-related functions should be assigned to view steps.
  
  
  
  Adjust the step type or function accordingly:
  
  If you need to perform navigation, change the step type to a plug.
  If you need to perform UI actions, ensure the step is a view.
  Alternatively, modify your logic to use the correct function for the step type.
  
  
  
  Check the Web Dynpro window layout and navigation flow:
  
  Make sure the navigation plugs and views are correctly linked.
  Ensure that the navigation flow corresponds to the step types.
  
  
  
  Rebuild and test the Web Dynpro application after making changes.
  
  
  
  Related Information
  
  SAP Note / Documentation: There might be specific SAP Notes related to your SAP version or Web Dynpro framework version that address this error.
  Web Dynpro ABAP Programming Guide: Review the sections on navigation and step types.
  Transaction / Tools:
  
  Use SE80 or Eclipse with ABAP Development Tools (ADT) to inspect and modify Web Dynpro components.
  Use WD_COMPONENT and WD_WINDOW editors to check step configurations.
  
  
  Common keywords for searching SAP Community or OSS Notes:
  
  WD393
  Web Dynpro step type
  Function not allowed for step type
  Navigation plug error in Web Dynpro
  
  
  
  
  If you provide the exact context or code snippet where the error occurs, I can help with a more specific solution.