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# Resource: Inventory Items V3

# Type: Inventory Item Object

# Link: https://dev.wix.com/docs/api-reference/business-solutions/stores/catalog-v3/inventory-items-v3/inventory-item-object.md

## Description: Inventory Item.

Each inventory item represents a specific product variant at a specific location.
The combination of `variantId` and `locationId` is unique — you can't have two inventory items for the same variant at the same location.

## Schema:

```json
 Type: Inventory Item Object | type: InventoryItem
 Description: Inventory Item.

Each inventory item represents a specific product variant at a specific location.
The combination of `variantId` and `locationId` is unique — you can't have two inventory items for the same variant at the same location.
       - name: id  | type: string | description: Inventory item ID.
           - name: value  | type: string | description: 
       - name: revision  | type: string | description: Revision number, which increments by 1 each time the inventory item is updated. To prevent conflicting changes, the current revision must be passed when updating the inventory item.  Ignored when creating an inventory item.
           - name: value  | type: string | description: 
       - name: createdDate  | type: string | description: Date and time the inventory item was created.
           - name: seconds  | type: string | description: 
           - name: nanos  | type: number | description: 
       - name: updatedDate  | type: string | description: Date and time the inventory item was last updated.
       - name: variantId  | type: string | description: Variant ID.
       - name: locationId  | type: string | description: Stores location ID. If not specified when creating an inventory item, the store's default location is used.
       - name: productId  | type: string | description: Product ID.
       - name: trackQuantity  | type: boolean | description: Whether the quantity is being tracked.
       - name: availabilityStatus  | type: string | description: Inventory item availability status.
           enum: OUT_OF_STOCK, IN_STOCK, PREORDER
       - name: preorderInfo  | type: PreorderInfo | description: Item preorder info.  Preorder settings are configured per inventory item, so each variant-location combination can have its own preorder configuration.  > **Note:** The product entity's `inventory.preorderStatus` and `inventory.preorderAvailability` fields reflect only the default location's preorder state.
           - name: enabled  | type: boolean | description: Whether preorder is enabled for this inventory item.  > **Note:** Preorder can't be enabled for digital products or products with subscriptions.  Default: `false`
               - name: value  | type: boolean | description: 
           - name: message  | type: string | description: Message displayed to customers when the item is out of stock and preorder is enabled.
           - name: limit  | type: number | description: Maximum number of items that can be preordered after stock reaches zero.  Supported only for inventory items with `trackQuantity = true`.  Default: `100000`
               - name: value  | type: number | description: 
           - name: counter  | type: number | description: Number of times this item has been preordered.  Supported only for inventory items with `trackQuantity = true`.
           - name: quantity  | type: number | description: Remaining quantity available for preorder.  Supported only for items with `trackQuantity` set to `true`.
       - name: product  | type: Product | description: Associated product and variant details.
           - name: name  | type: string | description: Product name.
           - name: directCategoryIds  | type: Array<string> | description: List of category IDs that this product is included in directly.
           - name: variantName  | type: string | description: Variant name.
           - name: variantSku  | type: string | description: Variant SKU (stock keeping unit).
           - name: variantVisible  | type: boolean | description: Whether the variant is visible in the store.
       - name: extendedFields  | type: ExtendedFields | description: Custom field data for the inventory item object.  [Extended fields](https://dev.wix.com/docs/build-apps/develop-your-app/extensions/backend-extensions/schema-plugins/about-schema-plugin-extensions.md) must be configured in the app dashboard before they can be accessed with API calls.
           - name: namespaces  | type: object | description: Extended field data. Each key corresponds to the namespace of the app that created the extended fields. The value of each key is structured according to the schema defined when the extended fields were configured.  You can only access fields for which you have the appropriate permissions.  Learn more about [extended fields](https://dev.wix.com/docs/rest/articles/getting-started/extended-fields.md).

```