How To Fix WD063 - Reference of container element '&' was changed -> see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: WD - Workflow definition

• Message number: 063

• Message text: Reference of container element '&' was changed -> see long text

What causes this issue?

The reference of the container element has been changed. That is, the
wait step or the event generator is no longer correctly defined (event
possibly no longer matches the object type).

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?

Check the step and possibly change the event and the binding.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WD063 - Reference of container element '&' was changed -> see long text ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WD063 Reference of container element '&' was changed -> see long text
  
  Cause:
  This error occurs in Web Dynpro applications when the reference of a container element (UI element or context node) is changed unexpectedly during the runtime. In Web Dynpro, container elements (like UI elements or context nodes) are expected to maintain their references during the lifecycle of the application. If the reference changes, it usually indicates that the element was replaced or re-initialized improperly, which can lead to inconsistencies in the UI or context handling.
  Common causes include:
  
  Replacing or re-creating UI elements or context nodes dynamically without proper handling.
  Incorrect manipulation of context nodes or UI elements in the component controller or view controller.
  Using methods that reset or clear the container element reference unintentionally.
  Issues in the lifecycle management of the Web Dynpro component/view.
  
  
  Solution:
  To resolve this error, consider the following steps:
  
  
  Check the Code Where the Container Element is Manipulated:
  
  Review the code where the container element (e.g., UI element or context node) referenced by & is being changed.
  Avoid re-assigning or replacing the container element reference directly.
  Instead of replacing the container element, update its properties or context data.
  
  
  
  Proper Context Handling:
  
  If the error relates to context nodes, ensure that context nodes are not being replaced but updated.
  Use context node methods like bind_element, unbind_element, or set_static_attributes properly.
  
  
  
  UI Element Lifecycle:
  
  Avoid destroying and recreating UI elements dynamically unless necessary.
  If dynamic UI changes are needed, use the appropriate Web Dynpro APIs to add or remove UI elements safely.
  
  
  
  Debugging:
  
  Use the debugger to trace where the container element reference changes.
  Check the call stack and identify the point where the reference is altered.
  
  
  
  Check for Framework Notes or Patches:
  
  Sometimes, this error can be caused by bugs in the Web Dynpro framework.
  Check SAP Notes for any relevant patches or fixes.
  
  
  
  
  Related Information:
  
  Web Dynpro Container Elements: These are UI elements or context nodes that hold references to data or UI components.
  Context Nodes: Represent data structures in Web Dynpro and should be handled carefully to avoid reference changes.
  SAP Notes: Search for notes related to message WD063 for any known issues or updates.
  SAP Help Portal: Refer to Web Dynpro documentation for best practices on context and UI element handling.
  
  
  If you provide the exact scenario or code snippet where this error occurs, I can help you with a more specific solution.