How To Fix /IWXBE/CORE021 - Service name '&1' is invalid, Y* or Z* name space is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWXBE/CORE -

• Message number: 021

• Message text: Service name '&1' is invalid, Y* or Z* name space is not allowed

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWXBE/CORE021 - Service name '&1' is invalid, Y* or Z* name space is not allowed ?

  The SAP error message /IWXBE/CORE021 Service name '&1' is invalid, Y* or Z* name space is not allowed typically occurs when you are trying to create or register a service in SAP that uses a name starting with 'Y' or 'Z'. In SAP, the naming conventions for certain objects, including services, are restricted to prevent conflicts with standard SAP objects.
  Cause:
  
  Invalid Naming Convention: The service name you are trying to use starts with 'Y' or 'Z', which are reserved for customer-specific developments. SAP restricts the use of these namespaces for certain objects to ensure that standard SAP services are not overridden or conflicted with custom developments.
  Service Registration: This error often arises during the registration of a service in the SAP Gateway or when trying to expose a service that does not comply with the naming conventions.
  
  Solution:
  
  Rename the Service: Change the service name to start with a different character that is allowed. Typically, service names should start with letters that are not reserved for customer-specific developments (e.g., A, B, C, etc.).
  Check Naming Conventions: Ensure that the service name adheres to the SAP naming conventions. You can refer to the SAP documentation for the specific naming rules applicable to the object you are working with.
  Use Standard Namespaces: If you are developing a custom service, consider using the standard namespaces provided by SAP or a different naming convention that does not conflict with the reserved namespaces.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for guidelines on naming conventions and best practices for service registration.
  SAP Notes: Check for any relevant SAP Notes that might provide additional context or updates regarding this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and how they resolved them.
  
  By following these steps, you should be able to resolve the error and successfully register your service in SAP.