How To Fix /UI2/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: /UI2/SAP_NWBC -

• Message number: 026

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

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 /UI2/SAP_NWBC026 - Tag &1 is in the SAP namespace; the defined tag overrules the SAP tag ?

  The SAP error message /UI2/SAP_NWBC026 indicates that there is a conflict between a custom tag defined in your application and a standard SAP tag that exists in the SAP namespace. This typically occurs in the context of SAP Fiori or SAP UI5 applications where custom UI elements are being defined.
  Cause:
  
  Namespace Conflict: The error arises when a custom tag (defined by the user or developer) has the same name as a standard SAP tag. In SAP, tags are often defined within namespaces, and if a custom tag is defined in the same namespace as an SAP tag, it can lead to conflicts.
  Overriding Behavior: The custom tag is overriding the standard SAP tag, which can lead to unexpected behavior or functionality issues in the application.
  
  Solution:
  
  Rename Custom Tag: The most straightforward solution is to rename the custom tag to avoid the conflict. Ensure that the new name does not conflict with any existing tags in the SAP namespace.
  Use a Different Namespace: If possible, define your custom tags in a different namespace. This will help avoid conflicts with SAP standard tags.
  Review Custom Code: Check the custom code for any instances where the conflicting tag is being used. Update the references to the new tag name if you decide to rename it.
  Check for Updates: Ensure that your SAP system is up to date. Sometimes, conflicts can arise from outdated components or libraries.
  Consult Documentation: Review the SAP documentation for guidelines on naming conventions and best practices for custom tags in SAP UI5/Fiori applications.
  
  Related Information:
  
  SAP UI5 Documentation: Refer to the official SAP UI5 documentation for best practices on creating custom controls and managing namespaces.
  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 Web IDE or Business Application Studio to trace where the conflict is occurring and to test changes in real-time.
  
  By following these steps, you should be able to resolve the error and ensure that your custom tags work harmoniously with the standard SAP tags.