## Create a unit of measure

`POST /v1/catalog-measures`

Adds a new unit of measure to the product catalog directory so that product quantities can be expressed in it. The request body is flat — no `fields` wrapper.

## Request fields (body)

| Field | Type | Required | Description |
|------|-----|:-----:|---------|
| `code` | number | yes | Unit code in the Russian National Classifier of Units of Measurement (OKEI), an integer. Unique within the Bitrix24 account. Codes already in use — see [`GET /v1/catalog-measures`](/docs/entities/catalog-measures/list) |
| `measureTitle` | string | yes | Unit of measure name |
| `symbol` | string | no | Short symbol, for example `pkg` |
| `symbolIntl` | string | no | International symbol |
| `symbolLetterIntl` | string | no | International letter code, for example `PCE` |
| `isDefault` | string | no | Default unit: `Y` or `N`. If the field is omitted, the unit is created with `N` |

Full field list — [`GET /v1/catalog-measures/fields`](/docs/entities/catalog-measures/fields).

## Examples

### curl — personal key

```bash
curl -X POST "https://vibecode.bitrix24.com/v1/catalog-measures" \
  -H "X-Api-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "code": 9917,
    "measureTitle": "Documentation test",
    "symbol": "dt",
    "symbolIntl": "td",
    "symbolLetterIntl": "TDC"
  }'
```

### curl — OAuth application

```bash
curl -X POST "https://vibecode.bitrix24.com/v1/catalog-measures" \
  -H "X-Api-Key: YOUR_APP_KEY" \
  -H "Authorization: Bearer USER_SESSION_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "code": 9917,
    "measureTitle": "Documentation test",
    "symbol": "dt",
    "symbolIntl": "td",
    "symbolLetterIntl": "TDC"
  }'
```

### JavaScript — personal key

```javascript
const res = await fetch('https://vibecode.bitrix24.com/v1/catalog-measures', {
  method: 'POST',
  headers: {
    'X-Api-Key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    code: 9917,
    measureTitle: 'Documentation test',
    symbol: 'dt',
    symbolIntl: 'td',
    symbolLetterIntl: 'TDC',
  }),
})

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

### JavaScript — OAuth application

```javascript
const res = await fetch('https://vibecode.bitrix24.com/v1/catalog-measures', {
  method: 'POST',
  headers: {
    'X-Api-Key': 'YOUR_APP_KEY',
    'Authorization': 'Bearer USER_SESSION_TOKEN',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    code: 9917,
    measureTitle: 'Documentation test',
    symbol: 'dt',
    symbolIntl: 'td',
    symbolLetterIntl: 'TDC',
  }),
})

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

## Response fields

The response comes with status `201` and contains the full created record.

| Field | Type | Description |
|------|-----|---------|
| `success` | boolean | Always `true` on success |
| `data.id` | number | ID of the created unit. Pass it in the product's `measure` field |
| `data.code` | number | OKEI unit code |
| `data.measureTitle` | string | Unit of measure name |
| `data.symbol` | string \| null | Short symbol. `null` if not provided |
| `data.symbolIntl` | string \| null | International symbol. `null` if not provided |
| `data.symbolLetterIntl` | string \| null | International letter code. `null` if not provided |
| `data.isDefault` | string | `Y` — default unit, `N` — not default |
| `meta.warnings` | array | Present only if the body contains a field that is not among the unit of measure fields. Each entry carries `code: "UNRECOGNIZED_WRITE_FIELD"`, `field` with the field name, and `message` |

## Response example

```json
{
  "success": true,
  "data": {
    "code": 9917,
    "id": 17,
    "isDefault": "N",
    "measureTitle": "Documentation test",
    "symbol": "dt",
    "symbolIntl": "td",
    "symbolLetterIntl": "TDC"
  }
}
```

## Error response example

400 — fractional unit code, the record is not created:

```json
{
  "success": false,
  "error": {
    "code": "INVALID_PARAMS",
    "message": "Field \"code\" must be an integer; Bitrix24 silently truncates fractional values."
  }
}
```

## Errors

| HTTP | Code | Description |
|------|-----|---------|
| 400 | `MISSING_REQUIRED_FIELDS` | `code` or `measureTitle` is missing. The message names the first missing field, for example `Body field "code" is required to create catalogMeasure.` |
| 400 | `INVALID_PARAMS` | `code` is not an integer, for example `9917.5` |
| 400 | `INVALID_PARAMS` | `isDefault` is neither `Y` nor `N` |
| 422 | `BITRIX_ERROR` | A unit with this `code` already exists in the Bitrix24 account. The message is `Duplicate entry for key [code]`, and the response also carries `error.b24Code` |
| 403 | `SCOPE_DENIED` | The API key does not have the `catalog` scope |
| 401 | `TOKEN_MISSING` | The API key has no configured tokens |
| 401 | `MISSING_API_KEY` | The `X-Api-Key` header is missing |

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

## Known specifics

**A field with a misspelled name does not stop creation.** If the body contains an unknown field alongside `code` and `measureTitle`, the unit is created with status `201`, and a warning in `meta.warnings` reports that this field may not have been saved. Check field names against [`GET /v1/catalog-measures/fields`](/docs/entities/catalog-measures/fields), and verify the result by checking the values in `data`, not just `success`.

## See also

- [List units of measure](/docs/entities/catalog-measures/list)
- [Get a unit of measure](/docs/entities/catalog-measures/get)
- [Update a unit of measure](/docs/entities/catalog-measures/update)
- [Delete a unit of measure](/docs/entities/catalog-measures/delete)
- [Unit of measure fields](/docs/entities/catalog-measures/fields)
- [Create a catalog product](/docs/entities/catalog-products/create)
- [Batch](/docs/batch)
- [Limits and optimization](/docs/optimization)