# PUT /api/v1/inventory/products/variants/{id}/location-quantities

> Set variant location opening quantities

- **Tag:** inventory:products
- **Operation ID:** `set_variant_location_quantities_api_v1_inventory_products_variants__id__location_quantities_put`

## Description

Set absolute on-hand quantities for this variant at each location without creating inventory adjustment journal entries.

## Authentication

Bearer token in `Authorization` header.
Required header: `x-business-id: <business uuid>`.

## Parameters

- `id` (path, string · uuid, required)

## Request body

Schema: `SetVariantLocationQuantitiesRequest`

- `location_quantities` (array · VariantLocationQuantityInput · required) → `VariantLocationQuantityInput` — List of per-location absolute quantities.
  - `location_id` (string · required) — Location UUID.
  - `on_hand` (number · required) — Absolute on-hand quantity to set at this location.
- `effective_at` (string · date-time) — Timestamp for inventory records (ISO 8601). Defaults to now.

## Responses

### 200 — Successful Response

Schema: `SuccessEnvelope_VariantResponse_`

- `success` (boolean)
- `message` (string)
- `code` (string)
- `data` (VariantResponse)

### 400 — Bad Request - Invalid input

### 404 — Not Found - Resource does not exist

### 422 — Validation Error - Invalid data format

## Code samples

### cURL

```bash
curl -X PUT 'https://api.ondayzero.com/api/v1/inventory/products/variants/{id}/location-quantities' \
  -H 'Authorization: Bearer dz_your_token' \
  -H 'x-business-id: YOUR_BUSINESS_ID' \
  -H 'Content-Type: application/json' \
  -d '{
  "location_quantities": []
}'
```

### JavaScript

```javascript
const response = await fetch('https://api.ondayzero.com/api/v1/inventory/products/variants/{id}/location-quantities', {
  method: 'PUT',
  headers: {
    Authorization: 'Bearer dz_your_token',
    'x-business-id': 'YOUR_BUSINESS_ID',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
  "location_quantities": []
}),
});
const data = await response.json();
```

### Python

```python
import httpx

headers = {
    "Authorization": "Bearer dz_your_token",
    "x-business-id": "YOUR_BUSINESS_ID",
}

payload = {
  "location_quantities": []
}

response = httpx.put("https://api.ondayzero.com/api/v1/inventory/products/variants/{id}/location-quantities", headers=headers, json=payload)
data = response.json()
```

## See also

- HTML version: https://www.ondayzero.com/docs/reference/inventory-products/set-variant-location-quantities
- OpenAPI slice: https://www.ondayzero.com/docs/reference/inventory-products/set-variant-location-quantities/openapi.json
- Other endpoints in **inventory:products**: https://www.ondayzero.com/docs/reference/inventory-products