How To Fix CL657 - Class & not defined in class type &

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 657

• Message text: Class & not defined in class type &

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 CL657 - Class & not defined in class type & ?

  The SAP error message CL657 indicates that a class is not defined in the specified class type. This error typically occurs in the context of Object-Oriented Programming in ABAP when you are trying to use a class that has not been properly defined or is not available in the system.
  Cause:
  
  Class Not Defined: The class you are trying to use has not been created or activated in the system.
  Incorrect Class Type: The class type specified may not match the actual class type in the system (e.g., trying to use a local class as a global class).
  Namespace Issues: The class might be in a different namespace that is not accessible from your current context.
  Transport Issues: If the class was recently transported from another system, it may not have been imported correctly.
  
  Solution:
  
  
  Check Class Definition:
  
  Go to transaction SE24 (Class Builder) and check if the class exists.
  Ensure that the class is activated.
  
  
  
  Verify Class Type:
  
  Make sure you are using the correct class type (local vs. global).
  Check the class type in the class definition.
  
  
  
  Namespace Check:
  
  Ensure that you are using the correct namespace. If the class is in a different namespace, you may need to adjust your code or include the appropriate namespace.
  
  
  
  Transport Check:
  
  If the class was recently transported, check the transport logs to ensure that it was imported successfully.
  If there are issues with the transport, you may need to re-transport the class.
  
  
  
  Authorization Check:
  
  Ensure that you have the necessary authorizations to access the class.
  
  
  
  Debugging:
  
  If the error persists, consider debugging the program to see where the class is being called and what parameters are being passed.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SE24: Class Builder
  SE80: Object Navigator
  SE11: Data Dictionary (to check related database tables if necessary)
  
  
  
  Documentation: Refer to SAP Help documentation for Object-Oriented Programming in ABAP for more details on class definitions and usage.
  
  
  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.