How To Fix TWBA103 - The function &1 does not exist

TWBA103 - Overview

• Message type: E = Error

• Message class: TWBA - Test case attribute messages

• Message number: 103

• Message text: The function &1 does not exist

What causes this issue?

The function module &V1& 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?

Specify an existing function, unless it is to be executed remotely and
exists in the remote system.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

TWBA103 - Details

• The SAP error message TWBA103, which states "The function &1 does not exist," typically indicates that the system is trying to call a function module, method, or procedure that is not defined or available in the current context. This can occur in various scenarios, such as during the execution of a program, a transaction, or a custom development.
  Causes:
  
  Missing Function Module: The function module or method being called does not exist in the system. This could be due to a typo in the function name or the function module not being activated.
  Transport Issues: If the function module was recently transported from another system, it may not have been imported correctly or may be missing.
  Authorization Issues: The user executing the function may not have the necessary authorizations to access the function module.
  Namespace Issues: The function might exist in a different namespace that is not accessible in the current context.
  Version Mismatch: If the