How To Fix WL020 - Class & cannot be instantiated or interface & is not supported

WL020 - Overview

• Message type: E = Error

• Message class: WL - Workflow: run-time messages

• Message number: 020

• Message text: Class & cannot be instantiated or interface & is not supported

What causes this issue?

Could not create instance of class &V1& dynamically, or the class does
not support interface &V2&.

System Response

Processing is aborted.

How to fix this error?

Check class &V1&. This class must implement interface &V2&.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WL020 - Class & cannot be instantiated or interface & is not supported ?

  The SAP error message:
  WL020 Class & cannot be instantiated or interface & is not supported
  typically occurs in the context of SAP Web Dynpro or related ABAP Object-Oriented programming environments.
  
  Cause
  This error indicates that the system is trying to instantiate a class or use an interface that:
  
  Cannot be instantiated because it is an abstract class or an interface.
  Is not supported in the current context or environment.
  The class or interface might be missing, inactive, or not properly implemented.
  There could be a mismatch in the expected interface or class version.
  The class or interface might be not released or not available in the current system/client.
  Sometimes, this error can occur if the class is not generated properly or the runtime environment does not support the interface.
  
  
  Typical Scenarios
  
  Trying to instantiate an interface (which is not allowed).
  Trying to instantiate an abstract class.
  Using a class/interface that is not supported in the Web Dynpro runtime.
  Missing or inactive class/interface in the