| Property | Type | Description | Required or Optional | Available Version |
|---|---|---|---|---|
| externalReferenceId | String | The external reference ID of the inventory location. | Optional | 51.0 |
| quantity | Double | The available quantity of the product. | Required | 51.0 |
| stockKeepingUnit | String | The Stock Keeping Unit of the product. | Required | 51.0 |