How To Fix WS_TOOL421 - Internal error: Function is no longer supported!

SAP Error Message - Details

• Message type: E = Error

• Message class: WS_TOOL - Message Class for Web Services and Virtual Endpoints

• Message number: 421

• Message text: Internal error: Function is no longer supported!

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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 WS_TOOL421 - Internal error: Function is no longer supported! ?

  The SAP error message:
  WS_TOOL421 Internal error: Function is no longer supported!
  Cause:
  This error typically occurs when a user or a program tries to execute a function or use a feature that has been deprecated or removed in the current SAP system version or patch level. The message indicates that the underlying function module, method, or tool that was previously available is no longer supported by SAP.
  Common scenarios include:
  
  Using outdated or obsolete function modules or APIs.
  Running custom code or third-party add-ons that rely on deprecated SAP functions.
  Upgrading the SAP system to a newer version where certain functions have been removed.
  Using old transaction codes or tools that internally call unsupported functions.
  
  Solution:
  
  
  Identify the Deprecated Function:
  
  Check the exact function or tool that triggers the error.
  Review the program or transaction code where the error occurs.
  Use debugging or system logs (ST22 short dumps, SM21 system log) to get more details.
  
  
  
  Check SAP Notes and Documentation:
  
  Search the SAP Support Portal for notes related to WS_TOOL421 or the specific function name.
  SAP often provides replacement functions or alternative approaches in their notes.
  
  
  
  Update or Modify Custom Code:
  
  If custom code calls the unsupported function, modify it to use the recommended alternative.
  Replace deprecated function modules or APIs with supported ones.
  Test thoroughly after changes.
  
  
  
  Apply SAP Patches or Support Packages:
  
  Sometimes, the error arises due to inconsistencies or bugs fixed in later patches.
  Ensure your system is up to date with the latest support packages.
  
  
  
  Consult SAP Documentation:
  
  Review the release notes or upgrade guides for your SAP version to understand which functions have been removed or replaced.
  
  
  
  Contact SAP Support:
  
  If the cause is unclear or no alternative is documented, raise a support ticket with SAP.
  Provide detailed information including system version, steps to reproduce, and logs.
  
  
  
  Related Information:
  
  This error is related to internal SAP tools or function modules that are no longer part of the system.
  It is often seen after system upgrades or when running legacy code.
  The message prefix WS_TOOL suggests it is related to SAP Web Services or internal SAP tools.
  Always ensure custom developments follow SAP’s current best practices and use supported APIs.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Attempt to use a deprecated or removed SAP function or tool.
  
  
  Solution
  Identify the unsupported function, replace with supported alternatives, update code, and apply patches.
  
  
  Related Info
  Often occurs after upgrades; check SAP Notes and documentation; may require SAP Support assistance.
  
  
  
  If you provide the exact context or transaction where this error occurs, I can help you find more specific guidance.