How To Fix UPWB143 - Names for Web interfaces beginning with Y or Z in customer namespace

SAP Error Message - Details

• Message type: E = Error

• Message class: UPWB - Messages for Development Class UPWB

• Message number: 143

• Message text: Names for Web interfaces beginning with Y or Z in customer namespace

What causes this issue?

The namespace for Web interfaces is determined as follows:
Web Interfaces, whose names begin with Y or Z, belong to customers.
All other Web Interfaces belong to SAP.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UPWB143 - Names for Web interfaces beginning with Y or Z in customer namespace ?

  The SAP error message UPWB143 indicates that there is an issue with the naming convention of web interfaces in the SAP system. Specifically, it states that names for web interfaces should not begin with the letters "Y" or "Z" when they are in the customer namespace. This is a restriction imposed by SAP to ensure that custom developments do not conflict with standard SAP objects.
  Cause:
  The error occurs when a developer attempts to create or use a web interface that starts with "Y" or "Z" in the customer namespace. In SAP, the namespaces are typically divided into standard (SAP) and customer-defined (Y and Z). The restriction is in place to maintain consistency and avoid potential conflicts with future SAP developments.
  Solution:
  To resolve this error, you should rename the web interface to ensure that it does not start with "Y" or "Z". Here are the steps you can take:
  
  Identify the Web Interface: Determine which web interface is causing the error.
  Rename the Interface: Change the name of the web interface to start with a different character (e.g., A to X) that is not restricted.
  Update References: If the web interface is referenced in other parts of your application, make sure to update those references to the new name.
  Test the Changes: After renaming, test the web interface to ensure that it functions correctly and that the error no longer appears.
  
  Related Information:
  
  SAP Naming Conventions: Familiarize yourself with SAP's naming conventions for custom objects. Generally, SAP reserves certain prefixes for standard objects, and customer objects should follow specific guidelines to avoid conflicts.
  Namespace Management: Understand how namespaces work in SAP and the importance of adhering to these conventions for future developments.
  Documentation: Refer to SAP documentation or the SAP Help Portal for more detailed information on naming conventions and best practices for custom developments.
  
  By following these steps and guidelines, you should be able to resolve the UPWB143 error and ensure compliance with SAP's naming conventions.