How To Fix ATO_NAMESPACE_CUST002 - Items in namespace &1 cannot be added. Check namespace settings.

SAP Error Message - Details

• Message type: E = Error

• Message class: ATO_NAMESPACE_CUST - ATO Namespace Related Messages for End User

• Message number: 002

• Message text: Items in namespace &1 cannot be added. Check namespace settings.

What causes this issue?

You want to add an item with namespace <(>&<)>1 to a collection. This is
not allowed.

System Response

The settings for namespace <(>&<)>1 do not allow the transport of items
in this namespace. With respect to this adding of an item with namespace
<(>&<)>1 to a collection is not allowed.

How to fix this error?

Check the namespace settings in the app Extensibility Settings.

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message ATO_NAMESPACE_CUST002 - Items in namespace &1 cannot be added. Check namespace settings. ?

  The SAP error message ATO_NAMESPACE_CUST002 indicates that there is an issue with adding items to a specific namespace in the SAP system. This error typically arises when the namespace settings are not configured correctly or when there are restrictions on the namespace that prevent the addition of new items.
  Cause:
  
  Namespace Restrictions: The namespace you are trying to add items to may have restrictions that prevent modifications or additions. This can happen if the namespace is reserved for specific purposes or if it is locked.
  Configuration Issues: The settings for the namespace in the SAP system may not be configured correctly, leading to this error.
  Authorization Issues: The user may not have the necessary authorizations to add items to the specified namespace.
  System Settings: The system may be set up in a way that does not allow changes to certain namespaces, especially if they are part of a standard or reserved namespace.
  
  Solution:
  
  
  Check Namespace Settings: 
  
  Go to the transaction code SE03 (Transport Organizer Tools) and check the namespace settings. Ensure that the namespace is configured to allow additions.
  Verify if the namespace is reserved or if it has any restrictions.
  
  
  
  Review Authorizations: 
  
  Ensure that the user attempting to add items has the necessary authorizations. You can check this in transaction SU53 after the error occurs to see if there are any authorization issues.
  
  
  
  Consult Documentation: 
  
  Review the SAP documentation or help files related to namespaces to understand the specific rules and configurations that apply to the namespace in question.
  
  
  
  Contact SAP Support: 
  
  If you are unable to resolve the issue through the above steps, consider reaching out to SAP support for assistance. They can provide guidance based on the specific configuration of your system.
  
  
  
  Check for Locks: 
  
  Ensure that the namespace is not locked by another process or user. You can check for locks using transaction SM12.
  
  
  
  Related Information:
  
  Namespaces in SAP: Namespaces are used to organize and manage objects in the SAP system. They help avoid naming conflicts and ensure that custom developments do not interfere with standard SAP objects.
  Transport Management: Understanding how transport management works in SAP can help in managing namespaces and ensuring that changes are properly transported across different environments (development, quality assurance, production).
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on namespace management.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.