How To Fix /PM0/3FS_MESSAGES001 - Class &1 does not implement interface &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /PM0/3FS_MESSAGES -

• Message number: 001

• 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.

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /PM0/3FS_MESSAGES001 - Class &1 does not implement interface &2 ?

  The SAP error message /PM0/3FS_MESSAGES001 Class &1 does not implement interface &2 typically indicates that a specific class in your SAP system is expected to implement a certain interface, but it does not. This can occur in various scenarios, particularly when working with custom development or enhancements in SAP.
  Cause:
  
  Missing Implementation: The class specified in the error message does not implement the required methods of the interface mentioned.
  Incorrect Class or Interface: The class or interface name may be incorrectly specified, leading to a mismatch.
  Changes in Interface: If the interface has been modified (e.g., methods added or changed), the class may need to be updated accordingly.
  Transport Issues: If the class or interface was recently transported from another system, it may not have been properly activated or may be missing.
  
  Solution:
  
  
  Check Class Implementation:
  
  Go to the ABAP Workbench (SE80 or SE24) and check the class mentioned in the error message.
  Ensure that the class implements all the methods defined in the interface.
  
  
  
  Implement Missing Methods:
  
  If the class does not implement the required methods, you will need to add the necessary implementations to the class.
  
  
  
  Verify Interface:
  
  Check the interface mentioned in the error message to ensure it is correctly defined and that the class is supposed to implement it.
  
  
  
  Activate Objects:
  
  If there were recent changes, ensure that both the class and the interface are activated. You can do this in the ABAP Workbench.
  
  
  
  Check Transport Requests:
  
  If the issue arose after a transport, verify that all related objects were included in the transport request and that they were successfully imported.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the code to see where the error is triggered and gather more context about the failure.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SE80: Object Navigator for checking classes and interfaces.
  SE24: Class Builder for managing class definitions.
  SE37: Function Module for checking related function modules.
  
  
  
  Documentation: Review SAP documentation or notes related to the specific class and interface for any known issues or updates.
  
  
  SAP Community: Consider searching or posting on the SAP Community forums for additional insights or similar experiences from other users.
  
  
  By following these steps, you should be able to identify the root cause of the error and implement the necessary changes to resolve it.