## Update a smart-process item

`PATCH /v1/items/:entityTypeId/:id`

Updates the fields of a smart-process item. Pass only the fields you are changing.

## Request parameters

| Parameter | Type | Description |
|----------|-----|---------|
| `entityTypeId` | number | Smart-process type ID (in the URL) |
| `id` | number | Item ID (in the URL) |

## Request fields (body)

| Parameter | Type | Description |
|----------|-----|---------|
| `title` | string | Name |
| `stageId` | string | Stage. List: `GET /v1/statuses?filter[entityId]=DYNAMIC_{entityTypeId}_STAGE_{categoryId}` |
| `contactId` | number | Contact ID |
| `companyId` | number | Company ID |
| `opportunity` | number | Amount |
| `currencyId` | string | Currency. List: `GET /v1/currencies` |
| `assignedById` | number | Assignee. List: `GET /v1/users` |
| `opened` | boolean | Available to everyone |
| `begindate` | datetime | Start date. Accepts ISO 8601, but only the date is stored — the time is dropped |
| `closedate` | datetime | End date. Accepts ISO 8601, but only the date is stored — the time is dropped |
| `observers` | array | Observer IDs |

Full field list: [GET /v1/items/:entityTypeId/fields](/docs/entities/items/fields). User fields (`ufCrmN_*`) are also accepted.

## Examples

In the examples `entityTypeId = 156`, `id = 783` — replace them with your values.

### curl — personal key

```bash
curl -X PATCH https://vibecode.bitrix24.com/v1/items/156/783 \
  -H "X-Api-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "stageId": "DT156_41:WON",
    "opportunity": 750000
  }'
```

### curl — OAuth application

```bash
curl -X PATCH https://vibecode.bitrix24.com/v1/items/156/783 \
  -H "X-Api-Key: YOUR_APP_KEY" \
  -H "Authorization: Bearer USER_SESSION_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "stageId": "DT156_41:WON",
    "opportunity": 750000
  }'
```

### JavaScript — personal key

```javascript
const res = await fetch('https://vibecode.bitrix24.com/v1/items/156/783', {
  method: 'PATCH',
  headers: {
    'X-Api-Key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    stageId: 'DT156_41:WON',
    opportunity: 750000,
  }),
})

const { success, data } = await res.json()
console.log('Updated:', data.id)
```

### JavaScript — OAuth application

```javascript
const res = await fetch('https://vibecode.bitrix24.com/v1/items/156/783', {
  method: 'PATCH',
  headers: {
    'X-Api-Key': 'YOUR_APP_KEY',
    'Authorization': 'Bearer USER_SESSION_TOKEN',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    stageId: 'DT156_41:WON',
    opportunity: 750000,
  }),
})

const { success, data } = await res.json()
```

## Response fields

| Field | Type | Description |
|------|-----|---------|
| `id` | number | Item ID |
| `title` | string | Name |
| `stageId` | string | Stage |
| `opportunity` | number | Amount |
| `assignedById` | number | Assignee |
| `updatedBy` | number | Last editor |
| `updatedTime` | datetime | Modification date |

The response contains all item fields after the update.

## Response example

```json
{
  "success": true,
  "data": {
    "id": 783,
    "title": "Supply contract",
    "stageId": "DT156_41:WON",
    "categoryId": 41,
    "companyId": 15,
    "contactId": 42,
    "opportunity": 750000,
    "currencyId": "USD",
    "assignedById": 1,
    "createdBy": 1,
    "updatedBy": 1,
    "movedBy": 1,
    "createdTime": "2026-04-15T14:30:00+00:00",
    "updatedTime": "2026-04-15T16:45:00+00:00",
    "movedTime": "2026-04-15T16:45:00+00:00"
  }
}
```

## Error response example

404 — item not found:

```json
{
  "success": false,
  "error": {
    "code": "ENTITY_NOT_FOUND",
    "message": "Item not found"
  }
}
```

## Errors

| HTTP | Code | Description |
|------|-----|---------|
| 400 | `INVALID_DYNAMIC_PARAM` | `entityTypeId` is not a positive integer or is reserved (1, 2, 3, 4, 7, 31) |
| 400 | `READONLY_FIELD` | A read-only field was passed in the body (`id`, `createdTime`, `updatedTime` and others) |
| 404 | `ENTITY_NOT_FOUND` | An item with the specified ID was not found |
| 422 | `BITRIX_ERROR` | Field validation error from Bitrix24. The specific reason is in the `message` field |
| 403 | `SCOPE_DENIED` | The API key does not have the `crm` scope |
| 401 | `TOKEN_MISSING` | The API key has no configured tokens |

Full list of common API errors — [Errors](/docs/errors).

## See also

- [Working with files in CRM fields](/docs/recipes/crm-files)
- [Get an item](/docs/entities/items/get)
- [Item fields](/docs/entities/items/fields)
- [Create an item](/docs/entities/items/create)
- [Entity API](/docs/entity-api)