How To Fix C1073 - Class type not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: C1 - Characteristics maintenance messages

• Message number: 073

• Message text: Class type not supported

What causes this issue?

You want to restrict use of characteristic &v2& to certain class types.
However, characteristic &v2& is linked to field &v4& in table &v3&, and
use of this field is not supported in class type &v1&.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Remove your entry.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message C1073 - Class type not supported ?

  The SAP error message C1073, which states "Class type not supported," typically occurs when there is an issue with the class type being used in a particular context, such as in a program, function module, or transaction. This error can arise in various scenarios, including when working with object-oriented programming in ABAP or when dealing with class-based components.
  Causes:
  
  Unsupported Class Type: The class type being referenced may not be supported in the context where it is being used. For example, trying to use a class that is not instantiated or is of an incorrect type.
  Incorrect Class Definition: The class may not be defined correctly, or it may not implement the required interfaces or inherit from the correct parent class.
  Version Compatibility: The class may be from a different version of SAP or may not be compatible with the current system configuration.
  Namespace Issues: If the class is in a different namespace and not properly referenced, it may lead to this error.
  
  Solutions:
  
  Check Class Definition: Verify that the class is defined correctly and that it implements all necessary methods and interfaces.
  Review Class Type: Ensure that the class type you are trying to use is supported in the context. For example, if you are trying to use a local class in a global context, it may not be allowed.
  Namespace Verification: If the class is in a different namespace, ensure that you are using the correct namespace prefix when referencing the class.
  Debugging: Use the ABAP debugger to trace where the error occurs and inspect the class type being used at that point.
  Check for Updates: Ensure that your SAP system is up to date, as there may be patches or updates that resolve compatibility issues with class types.
  Consult Documentation: Refer to SAP documentation or community forums for any known issues related to the specific class or context you are working with.
  
  Related Information:
  
  ABAP Object-Oriented Programming: Understanding the principles of object-oriented programming in ABAP can help in diagnosing issues related to class types.
  SAP Notes: Check SAP Notes for any specific notes related to the error message C1073, as there may be known issues or fixes provided by SAP.
  Community Forums: Engage with SAP community forums or support channels to see if others have encountered and resolved similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to your SAP support team or consult with an SAP expert for further assistance.