How To Fix WD220 - Internal error '&' occurred

WD220 - Overview

• Message type: E = Error

• Message class: WD - Workflow definition

• Message number: 220

• Message text: Internal error '&' occurred

What causes this issue?

Internal error occurred within the Workflow Builder.
0001,, The function module 'SWA_EXPR_ATTRIB_GET' returned an
,, exception.

System Response

Current processing is cancelled.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

INCLUDE NA_WF-ADMINISTRATOR OBJECT DOKU ID TX

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WD220 - Internal error '&' occurred ?

  The SAP error message WD220 Internal error '&' occurred is a generic internal error in the Web Dynpro ABAP (WD ABAP) framework. The ampersand (&) in the message is a placeholder for a more specific error code or text that should normally be displayed, but sometimes it appears as just '&' due to missing or incorrect message parameters.
  
  Cause
  
  Internal inconsistency or unexpected condition in the Web Dynpro runtime environment.
  Could be due to:
  Incorrect or missing parameters in a method call.
  Programming errors in custom Web Dynpro components.
  Issues in the Web Dynpro framework itself (rare).
  Corrupted or inconsistent metadata or cache.
  Problems in the communication between Web Dynpro components or with the backend.
  
  
  Sometimes occurs when an exception is raised but not properly handled or when a message is called without the required parameters.
  
  
  Solution / Troubleshooting Steps
  
  
  Check the Detailed Error Log:
  
  Use transaction ST22 (ABAP dump analysis) to check for any short dumps related to the error.
  Look for