Listar definiciones de campos personalizados

{
  "data": [
    {
      "id": "custom_field_definition_9f3a2b",
      "name": "Example custom field definition",
      "dataType": "text",
      "description": "Example text.",
      "options": [
        "Example options"
      ],
      "applyAt": [
        "order"
      ],
      "showOn": [
        "quote"
      ],
      "isActive": true,
      "createdAt": "2026-09-01T08:00:00.000Z",
      "updatedAt": "2026-09-01T08:00:00.000Z"
    }
  ]
}

{
  "type": "https://docs.filmo.io/errors/validation_error",
  "title": "Validation error",
  "status": 400,
  "code": "validation_error",
  "detail": "2 validation errors",
  "requestId": "req_0b9f6c1d2e3a4f5a8b7c6d5e4f3a2b1c",
  "errors": [
    {
      "path": "name",
      "code": "too_small",
      "message": "Must be at least 1 characters long"
    },
    {
      "path": "contactType",
      "code": "invalid_value",
      "message": "Value not allowed; expected company, person"
    }
  ]
}

{
  "type": "https://docs.filmo.io/errors/unauthorized",
  "title": "Unauthorized",
  "status": 401,
  "code": "unauthorized",
  "detail": "Missing Authorization header: Bearer <api key>",
  "requestId": "req_0b9f6c1d2e3a4f5a8b7c6d5e4f3a2b1c"
}

{
  "type": "https://docs.filmo.io/errors/addon_required",
  "title": "Add-on required",
  "status": 402,
  "code": "addon_required",
  "detail": "Your plan does not include the add-on this operation requires",
  "requestId": "req_0b9f6c1d2e3a4f5a8b7c6d5e4f3a2b1c",
  "requiredAddon": "custom-fields"
}

{
  "type": "https://docs.filmo.io/errors/insufficient_scope",
  "title": "Insufficient scope",
  "status": 403,
  "code": "insufficient_scope",
  "detail": "The API key does not have the required scope (orders:write)",
  "requestId": "req_0b9f6c1d2e3a4f5a8b7c6d5e4f3a2b1c",
  "requiredScope": "custom-fields:read"
}

{
  "type": "https://docs.filmo.io/errors/rate_limited",
  "title": "Rate limit exceeded",
  "status": 429,
  "code": "rate_limited",
  "detail": "Rate limit exceeded: retry in 30 seconds",
  "requestId": "req_0b9f6c1d2e3a4f5a8b7c6d5e4f3a2b1c",
  "retryAfter": 30
}

{
  "type": "https://docs.filmo.io/errors/internal_error",
  "title": "Internal error",
  "status": 500,
  "code": "internal_error",
  "detail": "Internal error",
  "requestId": "req_0b9f6c1d2e3a4f5a8b7c6d5e4f3a2b1c"
}