How To Fix /CFG/UI_BCW421 - Set Category of one primary key as 'Identifier'

SAP Error Message - Details

• Message type: E = Error

• Message class: /CFG/UI_BCW -

• Message number: 421

• Message text: Set Category of one primary key as 'Identifier'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /CFG/UI_BCW421 - Set Category of one primary key as 'Identifier' ?

  The SAP error message /CFG/UI_BCW421 Set Category of one primary key as 'Identifier' typically occurs in the context of configuring Business Configuration (BC) sets in SAP, particularly when dealing with the Business Configuration Workbench (BCW). This error indicates that there is an issue with the configuration of primary keys in a data model, specifically that one of the primary keys is not set as an 'Identifier'.
  Cause:
  
  Incorrect Configuration: The primary key in the data model is not properly defined. In SAP, primary keys must be designated as 'Identifier' to ensure that they uniquely identify records in the database.
  Missing Settings: The configuration settings for the primary key may be incomplete or incorrectly set, leading to this error message.
  Data Model Issues: There may be inconsistencies or errors in the underlying data model that prevent the primary key from being recognized as an identifier.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Access the Business Configuration Workbench:
  
  Navigate to the Business Configuration Workbench in your SAP system.
  
  
  
  Check the Data Model:
  
  Review the data model associated with the configuration set that is causing the error. Ensure that the primary key is correctly defined.
  
  
  
  Set the Primary Key as Identifier:
  
  Locate the primary key field in the data model configuration.
  Ensure that the category for this primary key is set to 'Identifier'. This may involve editing the properties of the primary key field.
  
  
  
  Save and Activate Changes:
  
  After making the necessary changes, save the configuration and activate it to ensure that the changes take effect.
  
  
  
  Test the Configuration:
  
  After making the changes, test the configuration to ensure that the error no longer occurs and that the system behaves as expected.
  
  
  
  Related Information:
  
  Documentation: Refer to SAP Help documentation for Business Configuration and the Business Configuration Workbench for detailed guidance on configuring data models and primary keys.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered and resolved similar issues.
  
  If the problem persists after following these steps, it may be beneficial to consult with an SAP expert or your organization's SAP support team for further assistance.