> For the complete documentation index, see [llms.txt](https://requestmechanic.gitbook.io/request-mechanic-api-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://requestmechanic.gitbook.io/request-mechanic-api-documentation/user/owner-registration-details-step-3-partial-update.md).

# Owner Registration Details - Step 3(Partial Update)

Use the `PATCH /user/registration/step3/owner/` endpoint to partially update the step 3 registration details for an owner.

***

**Parameters**

| **Name** | **Type** | **Location** | **Description**                                          |
| -------- | -------- | ------------ | -------------------------------------------------------- |
| `data`   | Object   | Body         | The details to update for the step 3 owner registration. |

***

**Request Body Fields**

| **Field**      | **Type**           | **Description**                               |
| -------------- | ------------------ | --------------------------------------------- |
| `id`           | String (required)  | The ID of the owner (1–255 characters).       |
| `car_brand`    | Object             | Details of the car brand.                     |
| **`name`**     | String (required)  | The name of the car brand (1–255 characters). |
| `car_brand_id` | Integer (required) | ID of the car brand.                          |
| `car_model`    | String (nullable)  | The car model (1–255 characters).             |

***

**Example Request**

```json
{
  "id": "owner123",
  "car_brand": {
    "name": "Toyota"
  },
  "car_brand_id": 10,
  "car_model": "Camry"
}
```

***

**Responses**

| **Code** | **Description**                                     |
| -------- | --------------------------------------------------- |
| `200`    | The registration details were successfully updated. |

**Example Response:**

```json
{
  "id": "owner123",
  "car_brand": {
    "id": 10,
    "name": "Toyota"
  },
  "car_brand_id": 10,
  "car_model": "Camry"
}
```