How To Fix CL450 - No functions created for class type "&"

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 450

• Message text: No functions created for class type "&"

What causes this issue?

You want to display a list of valid functions for this class type.
However, none have been created.

How to fix this error?

You can create these functions in Customizing by choosing
<ZH>Classification -> Classes -> Maintain Object Types and Class Types
</>.

<DS:TRAS.O1CL>Proceed</>
Select an entry in the object table and choose <ZH>Functions/Filters
for Finding Objects</>.
ENDIF

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CL450 - No functions created for class type "&" ?

  The SAP error message CL450, which states "No functions created for class type '&'", typically occurs when you are trying to create or use a method in a class that has not been properly defined or when the class type is not recognized by the system. This error is often encountered in the context of ABAP Object-Oriented programming.
  Cause:
  
  Class Type Not Defined: The class type you are trying to use may not be defined in the system. This could happen if the class was not created or if it was deleted.
  Incorrect Class Type: The class type specified may not be valid or may not correspond to any existing class in the system.
  Missing Implementation: The class may be defined, but the methods or functions that you are trying to call have not been implemented.
  Transport Issues: If the class was transported from another system, there may have been issues during the transport that caused the class or its methods to not be created properly.
  
  Solution:
  
  Check Class Definition: Verify that the class you are trying to use is defined in the system. You can do this by navigating to the Class Builder (transaction SE24) and checking if the class exists.
  Check Class Type: Ensure that the class type you are using is correct. If you are using a variable to reference the class, make sure it is correctly typed.
  Implement Methods: If the class is defined but methods are missing, you will need to implement the required methods in the class.
  Recreate Class: If the class is missing or corrupted, you may need to recreate it or restore it from a backup.
  Check Transport Logs: If the class was transported, check the transport logs for any errors or issues that may have occurred during the transport process.
  Authorization Issues: Ensure that you have the necessary authorizations to access and use the class and its methods.
  
  Related Information:
  
  Transaction Codes: Use SE24 (Class Builder) to check the class definition and SE80 (Object Navigator) to explore the class and its methods.
  Documentation: Review the SAP documentation for Object-Oriented programming in ABAP for more details on class definitions and method implementations.
  Debugging: If you are still encountering issues, consider using the ABAP debugger to trace the execution and identify where the error is occurring.
  
  By following these steps, you should be able to identify the cause of the CL450 error and implement a solution to resolve it.