Bad Request

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This error is a general-purpose bad request fallback. It occurs when a request is structurally incorrect or requests an action that is not supported or not implemented by the server.

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Error Response Example (RFC 9457)

{
  "type": "https://docs.apinow.app/errors/bad-request",
  "title": "Bad Request",
  "status": 400,
  "code": "INVALID_REQUEST",
  "detail": "Action 'archive' is not implemented for entity 'Invoice'.",
  "instance": "/api/v1/invoices/inv_99210/archive"
}

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Troubleshooting Guide

For API Consumers (What it means & how to fix)

• Unsupported Actions: You are requesting a custom action or endpoint structure that is not supported by this API. Check the API’s OpenAPI specification.
• Missing Parameters: Verify that all path parameters and headers required for the request are present and correct.

For API Authors (Domain & API Modeler notes)

• Action Exposures: Ensure that the custom action or endpoint path you are testing is explicitly exposed and defined in the API Modeler.