How To Fix SADL_GW_DT_SB_API021 - Structure &1 not in class &2

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GW_DT_SB_API - SADL Gateway integration: Messages for design time API

• Message number: 021

• Message text: Structure &1 not in class &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GW_DT_SB_API021 - Structure &1 not in class &2 ?

  The SAP error message SADL_GW_DT_SB_API021 indicates that there is an issue with the data structure being used in a service binding or data model in the SAP Gateway. Specifically, the error message states that a certain structure (denoted as &1) is not found in the specified class (denoted as &2). This typically occurs in the context of SAP Gateway service development, particularly when working with the Service Data Layer (SDL) and OData services.
  Cause
  The error can be caused by several factors:
  
  Missing Structure: The structure defined in the data model is not available or has not been created in the specified class.
  Incorrect Mapping: There may be a mismatch between the data model and the underlying data structure or class.
  Transport Issues: If the structure was recently transported from another system, it may not have been properly imported or activated.
  Development Errors: Errors in the development of the OData service or the data model can lead to this issue.
  
  Solution
  To resolve the error, you can follow these steps:
  
  
  Check Structure Definition:
  
  Verify that the structure &1 is correctly defined in the ABAP Dictionary (transaction SE11).
  Ensure that the structure is active and has no errors.
  
  
  
  Check Class Definition:
  
  Confirm that the class &2 is correctly defined and that it includes the necessary structure.
  Ensure that the class is active and properly implemented.
  
  
  
  Rebuild the Service:
  
  If you have made changes to the data model or structures, regenerate the service using transaction /IWFND/MAINT_SERVICE.
  You can also use transaction /IWFND/REG_SERVICE to register the service again.
  
  
  
  Check for Transport Issues:
  
  If the structure was transported, ensure that all related objects were transported correctly.
  Check for any missing dependencies that might not have been included in the transport.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the OData service to trace where the error occurs.
  Use transaction SE80 or SE37 to analyze the relevant methods and see how the structure is being accessed.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific error message for any additional guidance or known issues.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SE11: Data Dictionary
  SE80: Object Navigator
  /IWFND/MAINT_SERVICE: Service Maintenance
  /IWFND/REG_SERVICE: Register OData Service
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message.
  
  
  Community Forums: Consider searching or posting in SAP Community forums for additional insights from other developers who may have encountered similar issues.
  
  
  By following these steps, you should be able to identify and resolve the cause of the SADL_GW_DT_SB_API021 error in your SAP environment.