How To Fix CFD_REGISTRY_CHECK421 - Field Control Incl. &1 not in RDS Entity &2; Regenerate Model &3 in SEGW

SAP Error Message - Details

• Message type: E = Error

• Message class: CFD_REGISTRY_CHECK - Custom Fields: Messages for Registry Check

• Message number: 421

• Message text: Field Control Incl. &1 not in RDS Entity &2; Regenerate Model &3 in SEGW

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_REGISTRY_CHECK421 - Field Control Incl. &1 not in RDS Entity &2; Regenerate Model &3 in SEGW ?

  The SAP error message CFD_REGISTRY_CHECK421 typically occurs in the context of the SAP Gateway Service Builder (transaction SEGW) when there is a mismatch or inconsistency in the field control settings of your Data Model. This error indicates that a field control setting for a specific field is not recognized in the specified RDS (Rapid Data Services) entity.
  Cause:
  
  Field Control Mismatch: The field control for a specific field (denoted as &1) is not defined in the RDS entity (denoted as &2). This can happen if the field was removed or renamed in the underlying data model but the service definition still references it.
  Model Changes: If there have been changes to the underlying data model (like adding or removing fields) without regenerating the service, inconsistencies can arise.
  Service Definition Issues: The service definition may not be in sync with the data model, leading to this error.
  
  Solution:
  
  
  Regenerate the Model: The error message suggests regenerating the model. You can do this by:
  
  Opening the Service Builder (SEGW).
  Selecting the relevant project.
  Right-clicking on the project and choosing "Regenerate" or "Generate" to update the service definition with the current data model.
  
  
  
  Check Field Control Settings: Ensure that the field control settings for the fields in question are correctly defined in the RDS entity. You may need to:
  
  Open the RDS entity definition.
  Verify that all fields referenced in the service definition exist and are correctly configured.
  
  
  
  Review Changes: If there have been recent changes to the data model, review those changes to ensure that they are reflected in the service definition. If necessary, update the service definition to match the current data model.
  
  
  Check for Dependencies: Sometimes, other entities or services may depend on the one you are working with. Ensure that all related services and entities are also updated.
  
  
  Transport Issues: If you are working in a transport environment, ensure that all relevant transports have been moved to the target system and that the system is in a consistent state.
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SEGW: Service Builder for creating and managing OData services.
  SE11: Data Dictionary for checking table definitions and structures.
  
  
  
  Documentation: Refer to SAP Help documentation for OData services and the Service Builder for more detailed guidance on managing service definitions and data models.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on this error.
  
  
  By following these steps, you should be able to resolve the CFD_REGISTRY_CHECK421 error and ensure that your OData service is functioning correctly.