How To Fix WD422 - Contents of clipboard cannot be moved

SAP Error Message - Details

• Message type: E = Error

• Message class: WD - Workflow definition

• Message number: 422

• Message text: Contents of clipboard cannot be moved

What causes this issue?

The contents of the clipboard cannot be moved because they were created
with the command Edit->Copy.

System Response

The command Edit->Move was cancelled.

How to fix this error?

Fill the clipboard using the command Edit->Cut.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WD422 - Contents of clipboard cannot be moved ?

  SAP Error Message:
  
  WD422: Contents of clipboard cannot be moved
  
  Cause:
  This error typically occurs in SAP Web Dynpro applications when there is an issue with the clipboard handling mechanism. The clipboard in Web Dynpro is used to transfer data between different contexts or components. The error "Contents of clipboard cannot be moved" indicates that the system is unable to move or transfer the data stored in the clipboard, often due to one of the following reasons:
  
  The clipboard content is locked or currently in use by another process.
  The clipboard content is corrupted or inconsistent.
  There is an attempt to move clipboard content that is not allowed (e.g., trying to move a non-moveable object).
  The Web Dynpro component or application is trying to access clipboard data that has already been deleted or is no longer valid.
  Programming error where the clipboard is accessed incorrectly (e.g., wrong context node or invalid reference).
  
  
  Solution:
  To resolve the WD422 error, consider the following steps:
  
  
  Check Clipboard Usage in Code:
  
  Review the Web Dynpro ABAP code where the clipboard is accessed or manipulated.
  Ensure that the clipboard content is not being moved multiple times or accessed after it has been cleared.
  Use CL_WD_CLIPBOARD methods properly, especially move_contents or copy_contents.
  
  
  
  Avoid Multiple Moves:
  
  The clipboard content can only be moved once. If you need to use the content multiple times, use copy_contents instead of move_contents.
  
  
  
  Validate Clipboard Content:
  
  Before moving clipboard content, check if it exists and is valid.
  Use methods like has_contents to verify clipboard status.
  
  
  
  Synchronize Clipboard Access:
  
  If multiple components or processes access the clipboard, ensure proper synchronization to avoid conflicts.
  
  
  
  Clear Clipboard Appropriately:
  
  Clear the clipboard only when it is safe to do so, and avoid accessing it afterward.
  
  
  
  Debugging:
  
  Use the debugger to check the state of the clipboard at the point of failure.
  Check the call stack to identify where the clipboard move is attempted.
  
  
  
  SAP Notes and Patches:
  
  Check for relevant SAP Notes that might address bugs related to clipboard handling in your SAP NetWeaver or Web Dynpro version.
  Apply any recommended patches or support packages.
  
  
  
  
  Related Information:
  
  
  SAP Web Dynpro Clipboard:
  
  The clipboard is a transient storage area used to transfer data between different Web Dynpro components or contexts. It is managed by the class CL_WD_CLIPBOARD.
  
  
  Common Methods:
  
  move_contents: Moves the clipboard content to another clipboard or context, invalidating the source.
  copy_contents: Copies the clipboard content, leaving the source intact.
  has_contents: Checks if the clipboard currently holds any data.
  clear_contents: Clears the clipboard.
  
  
  
  Typical Scenario:
  
  When implementing drag-and-drop or data transfer between views/components, improper handling of clipboard content can cause this error.
  
  
  
  SAP Community and Forums:
  
  Many developers have encountered this error in custom Web Dynpro applications.
  Searching SAP Community Network (SCN) or SAP Support Portal with the error code WD422 can provide additional insights and solutions.
  
  
  
  
  Summary:
  The WD422 error "Contents of clipboard cannot be moved" is caused by improper handling or invalid state of the Web Dynpro clipboard content. The solution involves reviewing and correcting the clipboard operations in the Web Dynpro application code, ensuring proper use of move vs. copy operations, validating clipboard content before access, and synchronizing clipboard usage across components.
  
  If you provide the specific code snippet or scenario where this error occurs, I can help you with a more targeted solution.