How To Fix WD234 - Container element '&' has an invalid type or reference

WD234 - Overview

• Message type: E = Error

• Message class: WD - Workflow definition

• Message number: 234

• Message text: Container element '&' has an invalid type or reference

Self-Explanatory Message

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WD234 - Container element '&' has an invalid type or reference ?

  The SAP Web Dynpro error message:
  WD234 Container element '&' has an invalid type or reference
  
  Cause
  This error occurs when a UI element (container element) in a Web Dynpro component or view is defined with an invalid or incorrect type or reference. Specifically, the element's type or reference is either missing, incorrect, or does not correspond to a valid UI element type or interface.
  Common causes include:
  
  The element's type attribute is empty or contains an invalid value.
  The element references a UI element that does not exist or is not properly declared.
  The element's reference points to an object or interface that is not compatible with the container element.
  Corrupted or inconsistent Web Dynpro component metadata.
  Manual changes in the component XML or metadata that introduced invalid references.
  
  
  Solution
  To resolve this error, follow these steps:
  
  
  Check the element definition:
  
  Open the Web Dynpro component or view in the Web Dynpro Explorer.
  Navigate to the container element that causes the error.
  Verify that