How To Fix 5B551 - Class & does not implement interface &

SAP Error Message - Details

• Message type: E = Error

• Message class: 5B -

• Message number: 551

• Message text: Class & does not implement interface &

What causes this issue?

If you want to use class &V1& as an emulation class for infotype &V3&,
the class must implement interface &V2&.

System Response

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

How to fix this error?

Use a suitable class as an emulation class.

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 5B551 - Class & does not implement interface & ?

  The SAP error message 5B551 typically indicates that a class does not implement a specified interface. This error can occur in various scenarios, particularly when working with ABAP (Advanced Business Application Programming) in SAP systems. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause
  
  Missing Implementation: The class you are trying to use does not implement all the methods defined in the specified interface.
  Incorrect Class Definition: The class might not be correctly defined to implement the interface, or there may be a typo in the interface name.
  Changes in Interface: If the interface has been modified (e.g., methods added or changed) and the class has not been updated accordingly, this error can occur.
  Version Mismatch: There may be a version mismatch between the interface and the class, especially if the class was created before the interface was updated.
  
  Solution
  
  
  Check Class Implementation:
  
  Open the class in the ABAP Workbench (transaction SE80 or SE24).
  Verify that the class implements all the methods defined in the interface. If any methods are missing, implement them.
  
  
  
  Update Class:
  
  If the interface has been modified, update the class to ensure it implements the latest version of the interface.
  
  
  
  Correct Typographical Errors:
  
  Ensure that the interface name is correctly spelled in the class definition.
  
  
  
  Re-activate Objects:
  
  After making changes, re-activate both the class and the interface to ensure that the changes take effect.
  
  
  
  Check for Dependencies:
  
  Ensure that there are no other dependencies or references that might be causing the issue. Sometimes, other classes or programs may reference the class or interface incorrectly.
  
  
  
  Debugging:
  
  If the error persists, consider debugging the program or transaction that is triggering the error to identify the exact point of failure.
  
  
  
  Related Information
  
  ABAP Documentation: Review the official SAP documentation for ABAP and object-oriented programming to understand how interfaces and classes work.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Community Forums: Engage with SAP community forums or platforms like SAP Community, Stack Overflow, or other developer forums for additional insights and solutions from other developers who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the error message 5B551 and ensure that your class correctly implements the specified interface.