How To Fix WD046 - Object type '&1' does not inherit from '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: WD - Workflow definition

• Message number: 046

• Message text: Object type '&1' does not inherit from '&2'

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WD046 - Object type '&1' does not inherit from '&2' ?

  Certainly! Here's a detailed explanation of the SAP error message:
  
  SAP Error Message:
  WD046 Object type '&1' does not inherit from '&2'
  
  Cause:
  This error occurs in the Web Dynpro ABAP environment when an object type (class or interface) specified in the context or component does not inherit from the expected base type.
  In other words, the system expects an object of a certain type (or a subtype thereof), but the actual object provided is of a different type that does not have the required inheritance relationship.
  Typical scenarios include:
  
  Assigning or casting an object reference to a variable or parameter of a different type that is not a superclass or interface implemented by the object.
  Defining a context node or attribute with a certain type, but the actual object assigned is incompatible.
  Using component controllers or views where the expected controller type is not met by the actual controller.
  
  
  Explanation:
  
  &1 = The actual object type found.
  &2 = The expected base object type (superclass or interface).
  
  The error means:
  
  "The object type '&1' is not a subtype of '&2'."
  
  Solution:
  
  
  Check the Object Types:
  
  Verify the actual object type (&1) and the expected type (&2).
  Use transaction SE24 (Class Builder) or SE80 to check the inheritance hierarchy.
  
  
  
  Correct the Type Assignment:
  
  Ensure that the object you are assigning or passing is of the expected type or inherits from it.
  If you are casting, make sure the cast is valid.
  
  
  
  Adjust the Context or Component Definition:
  
  If the context node or attribute expects a certain type, make sure the assigned object matches or inherits from that type.
  If you are using component controllers or views, ensure the controller/view implements or inherits from the expected base controller/view.
  
  
  
  Refactor the Code or Component:
  
  If necessary, change the class or interface inheritance to meet the expected type.
  Alternatively, change the expected type to match the actual object type if that is the correct design.
  
  
  
  Debugging:
  
  Use the debugger to check the runtime types of objects.
  Check the call stack and the point where the assignment or cast happens.
  
  
  
  
  Related Information:
  
  This error is common in Web Dynpro ABAP when dealing with component controllers, views, or context nodes.
  Inheritance and interface implementation are fundamental in Web Dynpro component design.
  Always ensure that the object types conform to the expected inheritance hierarchy.
  Refer to SAP documentation on Web Dynpro ABAP component design and context binding.
  SAP Note and community forums may have specific cases and solutions related to this error.
  
  
  Example:
  Suppose you have a context node expecting an object of type ZCL_BASE_CONTROLLER, but you assign an object of type ZCL_OTHER_CONTROLLER which does not inherit from ZCL_BASE_CONTROLLER. This will trigger the WD046 error.
  
  If you provide the exact object types (&1 and &2) from your error message, I can help you analyze the specific inheritance issue.