How To Fix SADL_GW_DT_CDS046 - Foreign key association &1 is not exposed in the CDS view &2.

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GW_DT_CDS - Messages CDS Checks

• Message number: 046

• Message text: Foreign key association &1 is not exposed in the CDS view &2.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GW_DT_CDS046 - Foreign key association &1 is not exposed in the CDS view &2. ?

  The SAP error message SADL_GW_DT_CDS046 indicates that there is a foreign key association in a Core Data Services (CDS) view that is not exposed. This typically occurs when you are trying to access a field or association in a CDS view that is not available for consumption in the context you are working with, such as in an OData service or when trying to use the view in a specific application.
  Cause
  The error can be caused by several factors:
  
  Association Not Exposed: The foreign key association is defined in the CDS view but is not marked as exposed. This means it cannot be accessed from outside the view.
  Incorrect Annotations: The annotations in the CDS view may not be set correctly to expose the association.
  View Definition Issues: There may be issues in the way the CDS view is defined, such as missing or incorrect join conditions.
  
  Solution
  To resolve this error, you can take the following steps:
  
  
  Check the CDS View Definition:
  
  Open the CDS view in the ABAP Development Tools (ADT) or the relevant transaction (e.g., SE11).
  Ensure that the foreign key association is correctly defined.
  
  
  
  Expose the Association:
  
  If the association is not exposed, you need to add the appropriate annotations to expose it. You can do this by adding the @ObjectModel.association annotation to the association definition in the CDS view.
  Example:
  define view ZMy_CDS_View
  as select from my_table
  association [0..1] to other_table as _OtherTable
  on my_table.foreign_key = _OtherTable.key
  {
    key my_table.key,
    my_table.field1,
    _OtherTable.field2
  }
  
  
  
  
  Use Annotations for OData Exposure:
  
  If you are using the CDS view for OData services, ensure that you have the @OData.publish: true annotation at the view level to expose the view as an OData service.
  Example:
  @AbapCatalog.sqlViewName: 'Z_MY_CDS_VIEW'
  @OData.publish: true
  define view ZMy_CDS_View
  ...
  
  
  
  
  Check for Syntax Errors:
  
  Ensure there are no syntax errors in the CDS view that could prevent it from being activated.
  
  
  
  Activate the CDS View:
  
  After making changes, activate the CDS view to ensure that the changes take effect.
  
  
  
  Test the Changes:
  
  After activation, test the CDS view again to see if the error persists.
  
  
  
  Related Information
  
  CDS Views: Core Data Services (CDS) is a framework for defining semantically rich data models in SAP. CDS views can be used to create complex queries and expose data for various applications, including OData services.
  OData Services: OData is a standard protocol for accessing data over the web. In SAP, CDS views can be published as OData services for consumption by UI5 applications or other clients.
  SAP Documentation: Refer to the official SAP documentation for more details on CDS views, associations, and OData service exposure.
  
  By following these steps, you should be able to resolve the SADL_GW_DT_CDS046 error and successfully expose the foreign key association in your CDS view.