How To Fix OZ139 - Subobject name & not in customer namespace

OZ139 - Overview

• Message type: E = Error

• Message class: OZ - Customizing Basis tools

• Message number: 139

• Message text: Subobject name & not in customer namespace

What causes this issue?

You are trying to create a new subobject for an SAP maintenance and
transport object. The name you entered (&V1&) is not in the customer
name range, so you cannot be sure it will not be overwritten by system
maintenance.
The customer name range comprises all subobject names having a Y or Z
as the ninth character.

System Response

The subobject is created anyway.

How to fix this error?

Use a name in the customer name range.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OZ139 - Subobject name & not in customer namespace ?

  The SAP error message OZ139 indicates that a subobject name is not in the customer namespace. This typically occurs when you are trying to create or modify an object (like a table, function module, or class) in the SAP system, and the name you are using does not conform to the naming conventions for customer-defined objects.
  
  Cause:
  
  Namespace Violation: In SAP, objects are categorized into different namespaces. The customer namespace is usually defined by a specific prefix (like Z or Y). If you attempt to create an object with a name that does not start with these prefixes, you will encounter this error.
  Incorrect Naming: The name you are trying to use may be reserved for SAP standard objects or may not follow the naming conventions set by your organization.
  
  
  Solution:
  
  Use the Correct Namespace: Ensure that the name of the object you are trying to create or modify starts with the appropriate prefix (Z