How To Fix WZ404 - You cannot implement an inherited event at this point

SAP Error Message - Details

• Message type: E = Error

• Message class: WZ - Workflow: Model objects

• Message number: 404

• Message text: You cannot implement an inherited event at this point

What causes this issue?

You want to implement an event for the object type. However, this event
is inherited from a supertype and therefore cannot be implemented.

How to fix this error?

To implement the selected event, go to the object type in which the
event is local.
To implement another event (local only), select it and choose
<ls>Implement selected event</>.
If you want to extend the object type, choose <ls>Extend object type
</>. A new event is created.
Then choose <ls>Continue</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WZ404 - You cannot implement an inherited event at this point ?

  SAP Error Message:
  
  WZ404 - You cannot implement an inherited event at this point
  
  Cause:
  This error occurs in the context of Workflow (SAP Business Workflow) when you try to implement (define) an event in a workflow container or workflow definition that is inherited from a superclass or a parent workflow. In SAP Workflow, events that are inherited from a superclass or a parent workflow cannot be re-implemented or redefined in the subclass or child workflow at the same point.
  In other words, the system prevents you from redefining or implementing an event that is already defined in a higher-level workflow object because the event is inherited and should be handled only once at the appropriate level.
  
  When does it typically occur?
  
  When you create a workflow that inherits from another workflow (using inheritance in workflow definitions).
  When you try to implement an event in the child workflow that is already implemented in the parent workflow.
  When you try to redefine an inherited event in the workflow container or event linkage.
  
  
  Solution:
  
  Do not implement the inherited event again in the child workflow. Instead, use the event as it is inherited.
  If you need to change the behavior of the event, consider:
  
  Implementing the event only in the parent workflow.
  Overriding the event handling logic in the parent workflow if possible.
  Creating a new event in the child workflow instead of reusing the inherited event.
  
  
  Review the workflow inheritance structure and ensure that events are implemented only once at the appropriate level.
  If you want to extend or modify the event behavior, consider using event linkage or event handler methods rather than re-implementing the event.
  
  
  Related Information:
  
  Workflow inheritance allows workflows to reuse and extend existing workflows.
  Events are triggers in workflows that start or influence the workflow processing.
  SAP Workflow Builder (transaction SWDD) is used to define and implement workflows and events.
  The error message WZ404 is a safeguard to maintain consistency and avoid conflicts in event handling in inherited workflows.
  For more details, you can check SAP Notes or the SAP Help Portal on Workflow Inheritance and Event Implementation.
  
  
  Summary:
  
  
  
  Aspect
  Description
  
  
  
  
  Cause
  Attempt to implement an event that is inherited from a parent workflow or superclass.
  
  
  Effect
  SAP prevents re-implementation of the inherited event, raising error WZ404.
  
  
  Solution
  Implement the event only once in the parent workflow; do not redefine in the child workflow.
  
  
  Related Info
  Workflow inheritance, event linkage, SAP Workflow Builder (SWDD), SAP Notes on workflow.
  
  
  
  
  If you need further assistance, please provide details about the workflow scenario, inheritance structure, and where exactly you are trying to implement the event.