#openapi-3-1

Discriminator Mapping vs. Strict oneOf for Polymorphic Validation

Polymorphic Payload Modeling in OpenAPI 3.1 When defining request bodies that can accept multiple object types, developers typically choose between using a discriminator object for explicit mapping or relying on oneOf for structural validation. This decision impacts how tooling handles type dispatch and how validators react to ambiguous payloads. Tooling and