How To Fix WUF006 - Class &1 does not implement interface &2

SAP Error Message - Details

• Message type: E = Error

• Message class: WUF -

• Message number: 006

• Message text: Class &1 does not implement interface &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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WUF006 - Class &1 does not implement interface &2 ?

  The SAP error message WUF006 indicates that a specific class does not implement a required interface. This error typically arises in the context of Business Workflow (WF) or when dealing with object-oriented programming in ABAP.
  Cause:
  The error occurs when:
  
  A class is expected to implement a certain interface, but it does not.
  The interface is either not implemented in the class definition or the class is not correctly defined to implement the interface.
  There may be a mismatch between the expected interface and the actual class definition.
  
  Solution:
  To resolve the WUF006 error, you can follow these steps:
  
  
  Check Class Definition:
  
  Go to the class in question (denoted by &1 in the error message).
  Verify that the class is supposed to implement the interface (denoted by &2 in the error message).
  
  
  
  Implement the Interface:
  
  If the class is supposed to implement the interface, ensure that it is correctly defined to do so. You can do this by:
  
  Opening the class in the ABAP Workbench (transaction SE24).
  Going to the "Interfaces" tab and adding the required interface if it is not already listed.
  Implementing all the methods defined in the interface within the class.
  
  
  
  
  
  Check for Typos:
  
  Ensure there are no typographical errors in the interface name or class name.
  
  
  
  Activate the Class:
  
  After making changes, ensure that you activate the class to apply the changes.
  
  
  
  Check Workflow Configuration:
  
  If this error is occurring in the context of a workflow, check the workflow configuration to ensure that the correct class and interface are being referenced.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the workflow or the program that is triggering the error to identify where the incorrect class/interface reference is being made.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  SE24: Class Builder
  SWDD: Workflow Builder
  
  
  Documentation: Review SAP documentation on Business Workflow and Object-Oriented Programming in ABAP for more insights on interfaces and class implementations.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to this error message.
  
  By following these steps, you should be able to identify and resolve the cause of the WUF006 error in your SAP system.