Cambiar el rol de una relación

{
  "data": {
    "id": "contact_9f3a2b",
    "name": "Example contact",
    "contactType": "person",
    "role": "client",
    "status": "active",
    "nif": "B00000000",
    "commercialName": "Example commercial name",
    "position": "Example position",
    "contactNumber": "2026-0001",
    "emails": [
      {
        "id": "email_9f3a2b",
        "label": "Main",
        "email": "ana.garcia@example.com",
        "isPrimary": true
      }
    ],
    "billingEmail": "ana.garcia@example.com",
    "phoneNumbers": [
      {
        "id": "phone_number_9f3a2b",
        "label": "Main",
        "number": "+34 600 000 000",
        "countryCode": "+34",
        "isPrimary": true
      }
    ],
    "websites": [
      {
        "id": "website_9f3a2b",
        "label": "Main",
        "url": "https://example.com/resource"
      }
    ],
    "addresses": [
      {
        "id": "address_9f3a2b",
        "label": "Main",
        "addressLine1": "Calle de Ejemplo 12",
        "addressLine2": "Calle de Ejemplo 12",
        "city": "Madrid",
        "province": "Madrid",
        "postcode": "28001",
        "country": "ES",
        "isMain": true
      }
    ],
    "folder": "Example folder",
    "discountPercentage": 1,
    "preferredLanguage": "es-ES",
    "currency": "EUR",
    "paymentMethod": {
      "type": "bank_transfer",
      "customValue": "Example custom value"
    },
    "paymentDays": [
      1
    ],
    "expirationDays": 1,
    "subscribedToMarketing": true,
    "isAppUser": true,
    "customFields": {
      "example": "example"
    },
    "createdAt": "2026-09-01T08:00:00.000Z",
    "updatedAt": "2026-09-01T08:00:00.000Z",
    "relatedContacts": [
      {
        "id": "related_contact_9f3a2b",
        "name": "Example related contact",
        "commercialName": "Example commercial name",
        "contactType": "person",
        "role": "client",
        "status": "active",
        "relationRole": "Example relation role"
      }
    ]
  }
}

{
  "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/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": "contacts:write"
}

{
  "type": "https://docs.filmo.io/errors/not_found",
  "title": "Not found",
  "status": 404,
  "code": "not_found",
  "detail": "Resource not found",
  "requestId": "req_0b9f6c1d2e3a4f5a8b7c6d5e4f3a2b1c"
}

{
  "type": "https://docs.filmo.io/errors/conflict",
  "title": "Conflict",
  "status": 409,
  "code": "conflict",
  "detail": "The current state of the resource does not allow the operation",
  "requestId": "req_0b9f6c1d2e3a4f5a8b7c6d5e4f3a2b1c",
  "errors": [
    {
      "path": "",
      "code": "invalid_state",
      "message": "The current state of the resource does not allow the operation"
    }
  ]
}

{
  "type": "https://docs.filmo.io/errors/precondition_failed",
  "title": "Precondition failed",
  "status": 412,
  "code": "precondition_failed",
  "detail": "The resource changed since you read it: read it again and retry",
  "requestId": "req_0b9f6c1d2e3a4f5a8b7c6d5e4f3a2b1c"
}

{
  "type": "https://docs.filmo.io/errors/idempotency_key_reused",
  "title": "Idempotency-Key reused",
  "status": 422,
  "code": "idempotency_key_reused",
  "detail": "The Idempotency-Key header was already used with a different body",
  "requestId": "req_0b9f6c1d2e3a4f5a8b7c6d5e4f3a2b1c"
}

{
  "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"
}