How To Fix SAP_NWBC026 - Tag &1 is in the SAP namespace; the defined tag overrules the SAP tag

SAP Error Message - Details

• Message type: E = Error

• Message class: SAP_NWBC - NWBC Messages

• Message number: 026

• Message text: Tag &1 is in the SAP namespace; the defined tag overrules the SAP tag

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SAP_NWBC026 - Tag &1 is in the SAP namespace; the defined tag overrules the SAP tag ?

  The SAP error message SAP_NWBC026 indicates that there is a conflict between a custom tag defined in your SAP system and a standard SAP tag. Specifically, the message states that a tag (denoted as &1 in the error message) is in the SAP namespace, and the custom-defined tag is overriding the standard SAP tag.
  Cause:
  
  Namespace Conflict: The error typically arises when a custom development (like a custom UI5 application or a custom Web Dynpro application) defines a tag that has the same name as a standard SAP tag. This can lead to unexpected behavior since the system may not know which tag to prioritize.
  Custom Development: If you or your team have created custom components or applications that use the same tag names as those defined by SAP, this conflict will trigger the error.
  
  Solution:
  
  Rename Custom Tags: The most straightforward solution is to rename the custom tag to something unique that does not conflict with the SAP namespace. This will prevent the custom tag from overriding the standard SAP tag.
  Review Custom Code: Check the custom code or configuration where the tag is defined. Ensure that it adheres to naming conventions that avoid conflicts with SAP standard tags.
  Namespace Management: If you are developing custom applications, consider using a dedicated namespace for your custom developments. This can help avoid conflicts with SAP standard objects.
  Testing: After making changes, thoroughly test the application to ensure that the new tag names do not introduce any new issues.
  
  Related Information:
  
  SAP Documentation: Refer to the SAP Help Portal or the specific documentation for the technology you are using (e.g., SAP UI5, Web Dynpro) for guidelines on naming conventions and best practices.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and how they resolved them.
  Debugging Tools: Use debugging tools available in the SAP environment to trace where the tag is being defined and how it is being used in your application.
  
  By addressing the namespace conflict and ensuring that custom tags are uniquely named, you can resolve the SAP_NWBC026 error and prevent it from occurring in the future.