How To Fix C1666 - Obsolete function module & called

C1666 - Overview

• Message type: E = Error

• Message class: C1 - Characteristics maintenance messages

• Message number: 666

• Message text: Obsolete function module & called

What causes this issue?

You called a function module that is not released because it is no
longer used or supported.

System Response

This triggered a short dump.

How to fix this error?

Contact your system administrator or inform SAP AG.
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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.

Smart SAP Assistant

• What is the cause and solution for SAP error message C1666 - Obsolete function module & called ?

  The SAP error message C1666 indicates that a function module being called in your ABAP program is obsolete. This typically means that the function module is no longer recommended for use, possibly due to it being replaced by a newer function module or method that provides the same or enhanced functionality.
  
  Cause:
  
  Obsolescence: The function module has been marked as obsolete by SAP, which usually happens when there are better alternatives available.
  Legacy Code: The codebase may be using older function modules that have not been updated to reflect current best practices.
  SAP Version: The error may arise due to the version of SAP you are using, as newer versions may deprecate older function modules.
  
  
  Solution:
  
  Identify the Function Module: Check the specific function module that is causing the error. You can find this in the error message details.
  Find Alternatives: Look for the recommended alternative function module or method. This can often be found in the