openapi: "3.1.3"
info:
  title: "Reproducer"
  version: "0.1.0"
paths:
  /check:
    post:
      operationId: "check"
      responses:
        "200":
          description: "OK"
          content:
            application/json:
              schema:
                type: "object"
                properties:
                  status:
                    type: "string"
        "412":
          description: "Business error"
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/BusinessError"
        default:
          description: "Error"
          content:
            application/json:
              schema:
                type: "object"
                properties:
                  message:
                    type: "string"
components:
  schemas:
    BusinessError:
      oneOf:
        - $ref: "#/components/schemas/NotFoundError"
        - $ref: "#/components/schemas/BlockedError"
      discriminator:
        propertyName: "code"
        mapping:
          NOT_FOUND: "#/components/schemas/NotFoundError"
          BLOCKED: "#/components/schemas/BlockedError"
    NotFoundError:
      type: "object"
      required:
        - "code"
        - "type"
      properties:
        code:
          type: "string"
          const: "NOT_FOUND"
        type:
          type: "string"
          const: "general"
    BlockedError:
      type: "object"
      required:
        - "code"
        - "type"
      properties:
        code:
          type: "string"
          const: "BLOCKED"
        type:
          type: "string"
          const: "endpoint"