How To Fix SADL_RAP_OPXY_EDMX058 - Entity Set &1 : Navigation property (&2) has no cardinality

SADL_RAP_OPXY_EDMX058 - Overview

• Message type: E = Error

• Message class: SADL_RAP_OPXY_EDMX - RESTful ABAP Odata Proxy Support

• Message number: 058

• Message text: Entity Set &1 : Navigation property (&2) has no cardinality

Self-Explanatory Message

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SADL_RAP_OPXY_EDMX058 - Details

• The SAP error message SADL_RAP_OPXY_EDMX058 typically occurs in the context of the SAP RAP (Rapid Application Programming) model when there is an issue with the definition of an entity set and its navigation properties in the OData service. This error indicates that a navigation property defined in the entity set does not have a specified cardinality, which is essential for the OData service to understand the relationship between entities.
  
  Cause:
  
  Missing Cardinality Definition: The navigation property in the entity definition does not have a cardinality defined. Cardinality specifies how many instances of one entity can be associated with instances of another entity (e.g., one-to-one, one-to-many, many-to-many).
  Model Definition Issues: There may be issues in the underlying data model or the way the entities and their relationships are defined in the CDS (Core Data Services) views.
  Inconsistent Metadata: The metadata for the OData service may not be consistent with the underlying data model, leading to