How To Fix WD349 - Unused container elements deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: WD - Workflow definition

• Message number: 349

• Message text: Unused container elements deleted

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WD349 - Unused container elements deleted ?

  Certainly! Here's a detailed explanation of the SAP error message WD349: Unused container elements deleted:
  
  SAP Error Message: WD349 - Unused container elements deleted
  
  Cause:
  This message occurs in the Web Dynpro ABAP environment when the framework detects that some elements in the component controller's or the current controller's context container are not being used anymore and automatically deletes them.
  More specifically:
  
  The context container holds data elements (attributes, nodes) that are used during the processing of a Web Dynpro component or application.
  When the Web Dynpro runtime finds that certain container elements are no longer referenced or needed (for example, after a round trip or after a context synchronization), it cleans up these unused elements to optimize memory and processing.
  The message is informational and indicates that some container elements were removed because they were not used.
  
  
  When does it typically occur?
  
  During the processing of a Web Dynpro application, especially after context synchronization or after a round trip.
  When the context elements are dynamically created or manipulated but then not used or referenced.
  When there is a mismatch between the context elements expected and those actually used in the UI or code.
  
  
  Is it an error or warning?
  
  WD349 is an informational message, not an error.
  It does not stop the processing or cause the application to fail.
  It is mainly a diagnostic message to inform developers that some container elements were cleaned up.
  
  
  Solution / How to handle it:
  
  
  Usually, no action is required because this is a normal cleanup process by the Web Dynpro runtime.
  
  
  However, if you see this message frequently and suspect it is related to unexpected behavior, consider the following:
  
  
  Check your context usage:
  
  Verify that all context elements you create or expect to use are actually bound to UI elements or used in your code.
  Remove any unnecessary or redundant context elements to avoid confusion.
  
  
  
  Review context synchronization:
  
  Ensure that context synchronization between components or views is done correctly.
  Avoid creating context elements dynamically without proper usage.
  
  
  
  Debugging:
  
  Use the Web Dynpro debugger to check which container elements are created and which are deleted.
  This can help identify if some elements are unintentionally not used.
  
  
  
  Suppress message (if needed):
  
  Since it is informational, you can suppress this message in your message handling if it clutters logs or output.
  
  
  
  
  
  
  Related Information:
  
  Message Class: WD (Web Dynpro)
  Message Number: 349
  SAP Note / Documentation: There is no critical SAP Note for this message as it is informational.
  Context Container: The container is a data structure holding context nodes and attributes in Web Dynpro components.
  Web Dynpro Concepts: Understanding context, context mapping, and container elements is key to managing this message.
  
  
  Summary:
  
  
  
  Aspect
  Description
  
  
  
  
  Message
  WD349 - Unused container elements deleted
  
  
  Cause
  Web Dynpro runtime deletes unused context elements to optimize processing
  
  
  Effect
  Informational message, no error or failure
  
  
  Solution
  Usually no action needed; verify context usage if unexpected
  
  
  Related Info
  Web Dynpro context, container, synchronization
  
  
  
  
  If you want, I can help you with debugging steps or code examples related to context handling in Web Dynpro. Just let me know!