Extension items cannot be created in namespace &1.
Message type: E = Error
Message class: ATO_NAMESPACE_CUST - ATO Namespace Related Messages for End User
Message number: 000
Message text: Extension items cannot be created in namespace &1.
Self-Explanatory Message
SAP has defined this message as ‘self-explanatory’ and therefore, has not provided any further details for it.
All messages in SAP have a message text (shown above). However, the message text is not always useful enough to understand or resolve the issue.
Therefore, most messages in the SAP system provide additional long text with details about what caused the issue, how it can be resolved, what actions to take or configuration changes to make, etc
Unfortunately, this specific error message does not provide such additional information.
What else can you do?
Even though this error message does not provide any useful or additional message details, you can still try to solve the issue by searching on SAP’s support portal. In many cases, there could be an SAP support note that provides further error explanations or even directions for resolving the error.
Related Error Messages
ATO_NAMESPACE000 Administrator must not be assigned to a namespace in internal systems.
ATO_CUSTOMER843 Update blocked temporarily. Please try again later.
ATO_NAMESPACE_CUST001 Items in namespace &1 cannot be added to the template.
ATO_NAMESPACE_CUST002 Items in namespace &1 cannot be added. Check namespace settings.
