How To Fix FDT_EXPRESSIONS825 - Class &1 doesn't implement delivered interface &2

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 825

• Message text: Class &1 doesn't implement delivered 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 FDT_EXPRESSIONS825 - Class &1 doesn't implement delivered interface &2 ?

  The SAP error message FDT_EXPRESSIONS825 indicates that a class does not implement a required interface. This error typically arises in the context of SAP's Flexible Data Import (FDI) or Flexible Data Transfer (FDT) framework, where certain classes are expected to implement specific interfaces to function correctly.
  Cause:
  The error occurs when:
  
  A custom class (denoted as &1 in the error message) is expected to implement a specific interface (denoted as &2), but it does not.
  The class may not have been properly defined or may be missing the necessary method implementations required by the interface.
  There could be a mismatch between the expected interface and the actual implementation in the class.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Class Implementation:
  
  Go to the ABAP Workbench (transaction SE80 or SE24).
  Locate the class mentioned in the error message (&1).
  Verify that the class implements the interface specified in the error message (&2).
  
  
  
  Implement Missing Methods:
  
  If the class does not implement the required interface, you need to add the necessary methods as defined in the interface.
  Ensure that all methods required by the interface are correctly implemented in the class.
  
  
  
  Activate the Class:
  
  After making changes, activate the class to ensure that the changes take effect.
  
  
  
  Check for Inheritance:
  
  If the class is supposed to inherit from another class that implements the interface, ensure that the inheritance is correctly set up.
  
  
  
  Review Documentation:
  
  Check the SAP documentation or any custom documentation related to the FDT framework to understand the expected behavior and requirements for the class and interface.
  
  
  
  Testing:
  
  After making the necessary changes, test the functionality that triggered the error to ensure that it is resolved.
  
  
  
  Related Information:
  
  Transaction Codes: Use SE80 (Object Navigator) or SE24 (Class Builder) to work with classes and interfaces.
  Debugging: If the issue persists, consider using the debugger to trace the execution and identify where the implementation is failing.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance related to the FDT framework and this specific error.
  
  By following these steps, you should be able to resolve the FDT_EXPRESSIONS825 error and ensure that your class correctly implements the required interface.