Message type: E = Error
Message class:  SADL_RAP_OPXY_EDMX - RESTful ABAP Odata Proxy Support 
Message number: 017
Message text: Property & has no semantics reference
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The SAP error message SADL_RAP_OPXY_EDMX017 Property & has no semantics reference typically occurs in the context of the SAP RAP (Rapid Application Programming) model when there is an issue with the metadata definition of an entity or property in your service definition. This error indicates that a property in your entity does not have a defined semantics reference, which is necessary for the system to understand how to handle that property.
Cause: Missing Semantics Reference: The property in question is defined in the entity but lacks a corresponding semantics reference. This means that the system does not know how to interpret or use this property. Incorrect Annotations: The annotations that define the semantics of the property may be missing or incorrectly specified. Model Definition Issues: There may be issues in the way the data model is defined, such as missing or incorrect references to other entities or types.
Solution: Check Entity Definition: Review the entity definition
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