How To Fix 28156 - ABAP function module does not exist

28156 - Overview

• Message type: E = Error

• Message class: 28 - Configuration

• Message number: 156

• Message text: ABAP function module does not exist

What causes this issue?

The syntax check found an error in the function entry &V1&. The
function module does not exist.

System Response

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

How to fix this error?

Check your entry for the function or create the function module.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 28156 - ABAP function module does not exist ?

  The SAP error message "28156: ABAP function module does not exist" typically indicates that the system is trying to call an ABAP function module that is not available in the system. This can happen for several reasons, and here are some common causes, solutions, and related information:
  Causes:
  
  Function Module Not Created: The function module may not have been created or activated in the system.
  Transport Issues: If the function module was recently transported from another system, the transport may not have been successful, or the function module may not have been included in the transport request.
  Namespace Issues: The function module might exist in a different namespace or client, and the system is unable to access it.
  Authorization Issues: The user may not have the necessary authorizations to access the function module.
  System Version: The function module may exist in a different version of SAP or may have been deprecated in the current version.
  
  Solutions:
  
  Check Existence: