# Reserved stocks

Reserved stocks are used to refresh the reserved quantities associated with a specific [stock item](/core-api-reference/stock_items.md). They are automatically generated as part of the [stock reservations](/core-api-reference/stock_reservations.md) workflow and cannot be created manually.

{% hint style="warning" %}
Stock item's reserved quantities determine the actual availability of an SKU in a stock location. You can include them as a [relationship path](/core/including-associations.md#using-relationship-paths) when fetching a list of SKUs (or a single one) to check their [real-time stock availability](/core-api-reference/skus.md#checking-real-time-stock-availability) (additional computation on your side is required).
{% endhint %}

{% hint style="info" %}
This is an **immutable API**, meaning that create, update, and delete operations are not allowed on this endpoint. You can only fetch a list of reserved stocks or a single reserved stock object.
{% endhint %}


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