Invalid Request Format

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This error occurs when the API client sends a payload that cannot be parsed by the server, typically due to malformed JSON.

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Error Response Example (RFC 9457)

{
  "type": "https://docs.apinow.app/errors/invalid-request-format",
  "title": "Invalid Request Format",
  "status": 400,
  "code": "INVALID_REQUEST_FORMAT",
  "detail": "Unexpected token } in JSON at position 42",
  "instance": "/api/v1/users"
}

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Troubleshooting Guide

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

• Malformed JSON Syntax: Check that your JSON payload is formatted correctly. Common issues include:
  • Mismatched or missing closing brackets (}, ]).
  • Missing commas between fields.
  • Trailing commas after the last property.
  • Single quotes (') instead of double quotes (") around strings or keys.
• Incorrect Content-Type Header: Ensure your request includes the header Content-Type: application/json.

For API Authors (Domain & API Modeler notes)

• This is a client-side syntax error. The API Modeler and Domain Modeler are correctly configured, but the client application is sending raw request bodies that violate standard JSON syntax.