Message type: E = Error
Message class:  SADL_RAP_OPXY_EDMX - RESTful ABAP Odata Proxy Support 
Message number: 016
Message text: BDL artifact &1 already exists
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The SAP error message SADL_RAP_OPXY_EDMX016 indicates that there is an issue related to the Business Data Layer (BDL) artifact in the context of the RAP (Rapid Application Programming) model. Specifically, the error message states that the BDL artifact already exists, which typically means that there is a conflict in the naming or creation of the BDL artifacts in your SAP system.
Cause: Duplicate Artifact: The most common cause of this error is that you are trying to create a BDL artifact (like a service definition or entity) that already exists in the system. This can happen if: You have previously created the artifact and are attempting to create it again. There is a naming conflict with another artifact in the same namespace. Transport Issues: If you are working in a multi-system landscape, there may be inconsistencies between systems due to transport issues where the artifact was not properly transported. Development Environment: If you are working in
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