How To Fix USMD1260 - Data model &1: namespace or package for structure generation not valid

USMD1260 - Overview

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 260

• Message text: Data model &1: namespace or package for structure generation not valid

What causes this issue?

We recommend you do not change these entries for data models delivered
by SAP.

System Response

The data model cannot be saved.

How to fix this error?

To enhance a data model delivered by SAP using automatic structure
generation, make the corresponding entries in the view <LS>Prefix and
Packages for Model Enhancements</>.

Procedure for System Administrators

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.

USMD1260 - Details

• The SAP error message USMD1260 indicates that there is an issue with the namespace or package configuration for structure generation in the context of the Data Model in SAP Master Data Governance (MDG). This error typically arises when the system is unable to find a valid namespace or package for the data model you are working with.
  
  Cause:
  
  Invalid Namespace: The namespace defined for the data model is not valid or does not exist in the system.
  Package Issues: The package associated with the data model may not be correctly defined or may not have the necessary authorizations.
  Configuration Errors: There may be configuration errors in the data model settings that prevent the system from generating the required structures.
  Transport Issues: If the data model was transported from another system, there may be inconsistencies or missing objects in the target system.
  
  
  Solution:
  
  
  Check Namespace:
  
  Verify that the namespace defined for the data model is correct and exists in