How To Fix WD220 - Internal error '&' occurred

SAP Error Message - Details

• 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 the exact context or stack trace to identify where the error originated.
  
  
  
  Check Web Dynpro Trace:
  
  Enable Web Dynpro trace via transaction WD_TRACE or by setting trace parameters in the Web Dynpro configuration.
  Analyze the trace to find the exact cause.
  
  
  
  Review Custom Code:
  
  If the error occurs in a custom Web Dynpro application, review the code for:
  
  Incorrect method calls.
  Missing parameters in message calls (e.g., MESSAGE e001(zmsg) WITH ...).
  Unhandled exceptions.
  
  
  Ensure that all message calls have the correct number and type of parameters.
  
  
  
  Clear Web Dynpro Cache:
  
  Sometimes stale or corrupted cache causes internal errors.
  Use transaction SICF to reset the service or clear cache.
  Also, clear the Web Dynpro application cache via transaction WD_CACHE_CLEANUP.
  
  
  
  Check for OSS Notes:
  
  Search SAP Support Portal for OSS Notes related to message WD220 or internal errors in Web Dynpro.
  Apply any relevant patches or corrections.
  
  
  
  Update SAP Kernel and Web Dynpro Components:
  
  Ensure that your SAP system is up to date with the latest support packages and kernel patches.
  
  
  
  Debugging:
  
  If you have development access, debug the Web Dynpro application to find the exact point where the error occurs.
  Check the parameters passed to message calls or method calls.
  
  
  
  
  Related Information
  
  
  Message Class: WD (Web Dynpro)
  
  
  Message Number: 220
  
  
  Message Text: Internal error '&' occurred
  
  
  Transaction Codes:
  
  ST22 - ABAP Dump Analysis
  SICF - Maintain Services (for cache reset)
  WD_TRACE - Web Dynpro Trace
  WD_CACHE_CLEANUP - Clear Web Dynpro Cache
  
  
  
  SAP Notes Examples:
  
  Note 1234567 (example) - might address similar internal errors in Web Dynpro.
  Always check the SAP ONE Support Launchpad for the latest notes.
  
  
  
  
  Summary
  The WD220 Internal error '&' occurred is a generic internal error in Web Dynpro ABAP, often caused by missing parameters in message calls or internal inconsistencies. The solution involves checking dumps, traces, clearing caches, reviewing custom code, and applying SAP notes or patches.
  If you provide more context or the exact scenario where this error occurs, I can help narrow down the cause further.