How To Fix TO129 - Namespace &1 is reserved for generated objects

TO129 - Overview

• Message type: E = Error

• Message class: TO - Transport Organizer and Tools

• Message number: 129

• Message text: Namespace &1 is reserved for generated objects

What causes this issue?

The object &V2& &V3& is in namespace &V1&, which is reserved for
generated objects. This object cannot be edited since it is not flagged
as a generated object in the object directory.

System Response

The function terminates.

How to fix this error?

Choose an object name that does not begin with &V1&.
Also do not assign the object to a package that begins with &V1&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TO129 - Namespace &1 is reserved for generated objects ?

  The SAP error message TO129 indicates that a namespace is reserved for generated objects, which typically means that you are trying to create or modify an object (like a table, function module, or class) in a namespace that is not allowed for user-defined objects. This is common in SAP systems where certain namespaces are reserved for SAP's own development or for specific applications.
  
  Cause:
  
  Reserved Namespace: The namespace you are trying to use is reserved for SAP or for generated objects. In SAP, namespaces are often prefixed with specific letters (like /SAP/ or /ABAP/) that indicate they are reserved.
  Development Class: If you are trying to create an object in a development class that is not allowed for user-defined objects, you will encounter this error.
  Transport Layer: The transport layer may also restrict certain namespaces to prevent unauthorized changes.
  
  
  Solution:
  
  Use a Different Namespace: If you are developing custom objects, use a custom namespace that you