How To Fix FDT_CORE023 - Class / interface (ABAP-OO) &1 does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_CORE - Formula & Derivation Tool: Core

• Message number: 023

• Message text: Class / interface (ABAP-OO) &1 does not exist

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_CORE023 - Class / interface (ABAP-OO) &1 does not exist ?

  The SAP error message FDT_CORE023 indicates that a specified class or interface in ABAP Object-Oriented programming does not exist. This error typically arises in scenarios involving the use of classes or interfaces that are either not defined, misspelled, or not properly activated in the SAP system.
  Causes:
  
  Misspelling: The name of the class or interface may be misspelled in the code.
  Non-existent Class/Interface: The class or interface has not been created or does not exist in the system.
  Activation Issues: The class or interface exists but has not been activated, making it unavailable for use.
  Namespace Issues: The class or interface may exist in a different namespace that is not accessible in the current context.
  Transport Issues: If the class or interface was recently transported from another system, it may not have been imported correctly.
  
  Solutions:
  
  Check Spelling: Verify that the name of the class or interface is spelled correctly in your code.
  Verify Existence: Use transaction SE80 (Object Navigator) or SE24 (Class Builder) to check if the class or interface exists in the system.
  Activate the Class/Interface: If the class or interface exists but is not activated, activate it using transaction SE80 or SE24.
  Check Namespace: Ensure that you are using the correct namespace and that the class/interface is accessible in your current context.
  Transport Check: If the class/interface was recently transported, check the transport logs to ensure it was imported successfully. You may need to re-import the transport request if there were issues.
  Authorization: Ensure that you have the necessary authorizations to access the class or interface.
  
  Related Information:
  
  Transaction Codes:
  
  SE80: Object Navigator
  SE24: Class Builder
  SE11: Data Dictionary (to check for related database objects)
  
  
  ABAP Documentation: Review the official SAP documentation for ABAP Object-Oriented programming for more details on class and interface creation and management.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  
  By following these steps, you should be able to identify the cause of the error and implement the appropriate solution.