How To Fix /UI2/SAP_NWBC021 - Tag ID &1 is in customer's namespace and will not be transported

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/SAP_NWBC -

• Message number: 021

• Message text: Tag ID &1 is in customer's namespace and will not be transported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /UI2/SAP_NWBC021 - Tag ID &1 is in customer's namespace and will not be transported ?

  The SAP error message /UI2/SAP_NWBC021 indicates that a Tag ID (in this case, represented by &1) is in the customer's namespace and therefore cannot be transported. This typically occurs in the context of SAP Fiori or SAP NetWeaver Business Client (NWBC) when dealing with custom developments or configurations.
  Cause:
  
  Custom Namespace: The Tag ID is defined in a customer-specific namespace (usually starting with a "Z" or "Y"), which means it is not part of the standard SAP namespace. SAP restricts the transport of certain objects in customer namespaces to prevent conflicts and ensure that custom developments are managed properly.
  Transport Management: The transport system in SAP is designed to manage the movement of objects between different environments (development, quality assurance, production). Objects in the customer namespace are typically not included in standard transports to avoid overwriting or conflicting with standard SAP objects.
  
  Solution:
  
  Manual Transport: If you need to transport the Tag ID, you may need to manually recreate it in the target system. This involves documenting the configuration or development and then implementing it in the target environment.
  Check Transport Requests: Ensure that the transport request you are using is correctly set up to include the necessary objects. If the Tag ID is part of a larger development, ensure that all related objects are included in the transport request.
  Namespace Management: If you are developing new objects, consider whether they should be in the customer namespace or if they can be created in the standard namespace. However, be cautious with this approach, as it may lead to conflicts with future SAP updates.
  Consult Documentation: Review SAP documentation or notes related to the specific error message for any additional guidance or updates regarding transport management in your version of SAP.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional context or solutions for this error message. SAP Notes often contain important information about known issues and their resolutions.
  Transport Management System (TMS): Familiarize yourself with the Transport Management System in SAP, as it governs how objects are transported between systems.
  Development Guidelines: Follow SAP's best practices for development and transport management, especially when working in a customer namespace.
  
  If the issue persists or if you need further assistance, consider reaching out to your SAP Basis team or SAP support for more tailored help.