How To Fix WER090 - Application name &1 is in the SAP name space (&2)

SAP Error Message - Details

• Message type: E = Error

• Message class: WER - Messages for the package WER

• Message number: 090

• Message text: Application name &1 is in the SAP name space (&2)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WER090 - Application name &1 is in the SAP name space (&2) ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WER090 Application name &1 is in the SAP name space (&2)
  
  Meaning / Cause:
  This error occurs when you try to create or register an application (such as a Web Dynpro application, BSP application, or any other development object) with a name that falls within the SAP reserved namespace.
  
  &1: The application name you tried to use.
  &2: The SAP namespace prefix (usually starting with /SAP/).
  
  SAP reserves certain namespaces (usually starting with /SAP/) for its own standard objects and applications. Customers and partners are not allowed to create or register their own applications or development objects in these namespaces to avoid conflicts with SAP standard content.
  
  Why does this happen?
  
  SAP enforces namespace rules to maintain system integrity and avoid naming conflicts.
  If you try to create an application or object with a name starting with /SAP/ or any other SAP reserved namespace, the system will throw this error.
  
  
  Solution:
  
  
  Use a Customer or Partner Namespace:
  
  Instead of using the SAP namespace, use your own namespace.
  Customer namespaces usually start with /Z or /Y (e.g., /ZMYAPP or /YMYAPP).
  If you are a partner, you might have your own namespace registered with SAP (e.g., /ABC/).
  
  
  
  Check the Application Name:
  
  Change the application name to avoid the SAP namespace.
  For example, if you tried to create /SAP/MYAPP, change it to /ZMYAPP or /YMYAPP.
  
  
  
  Namespace Registration:
  
  If you want to use a custom namespace, ensure it is registered in the system via transaction SE03 (Transport Organizer Tools) or SE80.
  For partners, namespaces are registered with SAP and assigned to them.
  
  
  
  Review Naming Conventions:
  
  Follow SAP naming conventions for custom developments.
  Avoid using SAP reserved namespaces.
  
  
  
  
  Related Information:
  
  
  SAP Namespaces:
  
  SAP standard objects use namespaces like /SAP/, /BO/, /BC/, etc.
  Customer namespaces typically start with /Z or /Y.
  Partner namespaces are registered and assigned by SAP.
  
  
  
  Transactions to check namespaces:
  
  SE03: Transport Organizer Tools (Namespace management)
  SE80: Object Navigator (Check and create objects in your namespace)
  SNOTE: SAP Notes may provide additional info if this error is related to a specific SAP component.
  
  
  
  SAP Help:
  
  SAP documentation on namespaces and naming conventions.
  SAP Community forums often discuss namespace issues.
  
  
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  Application name &1 is in SAP namespace (&2)
  
  
  Cause
  Attempt to create/register an app in SAP reserved namespace
  
  
  Solution
  Use a customer or partner namespace (e.g., /Z or /Y) instead of /SAP/
  
  
  Tools
  SE03, SE80 for namespace and object management
  
  
  
  
  If you provide the exact context (e.g., which transaction or tool you were using when this error appeared), I can give more tailored advice.