How To Fix FL138 - Function module & is obsolete - do not use

FL138 - Overview

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 138

• Message text: Function module & is obsolete - do not use

What causes this issue?

The developer or person responsible for a function group declared the
function module to be obsolete.

System Response

Do not use the function module any longer. You can delete it in a later
release.

How to fix this error?

Read the short text or the module documentation for further information
or contact the person responsible for the function group.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

FL138 - Details

• The SAP error message FL138 indicates that a specific function module is obsolete and should not be used in your program or application. This typically occurs when SAP has deprecated certain function modules in favor of newer, more efficient, or more secure alternatives. 
  
  Cause:
  
  Obsolescence: The function module you are trying to use has been marked as obsolete by SAP. This can happen for various reasons, including:
  The function module is outdated and has been replaced by a newer version or a different approach.
  SAP is moving towards more modern programming paradigms, such as using BAPIs (Business Application Programming Interfaces) or OData services.
  The function module may have known issues or security vulnerabilities.
  
  
  
  
  Solution:
  
  
  Identify Alternatives: Check the SAP documentation or the function module's details in the SAP system to find recommended alternatives. You can do this by:
  
  Using transaction code SE37 to view the function module and check for any notes or documentation regarding its obsolescence.
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