How To Fix FDT_CORE036 - Class / interface cannot be changed, active version exists

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 036

• Message text: Class / interface cannot be changed, active version exists

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_CORE036 - Class / interface cannot be changed, active version exists ?

  The SAP error message FDT_CORE036 indicates that you are trying to change a class or interface in the SAP system while an active version of that class or interface exists. This is a common issue when working with ABAP classes or interfaces in the SAP environment, particularly when using the SAP Fiori or UI5 development tools.
  Cause:
  The error occurs because SAP enforces a versioning system to ensure that changes to classes and interfaces do not disrupt existing functionality. If there is an active version of a class or interface, you cannot make changes to it until the active version is deactivated or the changes are made in a way that does not affect the active version.
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Active Versions: 
  
  Go to the transaction code SE80 (Object Navigator) or SE24 (Class Builder) and check if there are any active versions of the class or interface you are trying to modify.
  
  
  
  Deactivate the Active Version:
  
  If you find an active version, you can deactivate it. This can usually be done by navigating to the version management section and selecting the option to deactivate the active version.
  
  
  
  Create a New Version:
  
  If you need to make changes, consider creating a new version of the class or interface instead of modifying the existing one. This allows you to make changes without affecting the active version.
  
  
  
  Transport Requests:
  
  Ensure that any changes you make are included in a transport request if you are working in a development environment. This will help maintain the integrity of the system when moving changes to production.
  
  
  
  Check for Dependencies:
  
  Make sure that there are no dependencies on the class or interface that might prevent you from deactivating it. If other objects depend on it, you may need to address those dependencies first.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific class or interface you are working with for any additional guidelines or best practices.
  
  
  
  Related Information:
  
  Version Management: Understanding how version management works in SAP can help you avoid this error in the future. Familiarize yourself with the concepts of active and inactive versions.
  Transport Management System (TMS): If you are working in a multi-system landscape, be aware of how changes are transported between systems.
  SAP Notes: Check for any relevant SAP Notes that might provide additional insights or solutions related to this error message.
  
  By following these steps, you should be able to resolve the FDT_CORE036 error and continue with your development work in SAP.