> ## Documentation Index
> Fetch the complete documentation index at: https://app.docs.circuly.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Rental Inventory & Capacity

> How rental stock works in v1: separate rental capacity, and why Shopify stock tracking must be off for rental products.

## How rental stock works

When you make a product rentable, Circuly needs to know how many units are available to rent at the same time. This is your **rental capacity**.

In v1, rental capacity is tracked **separately** from your normal Shopify "buy now" inventory. They are two independent pools:

* Selling the product normally in Shopify does **not** reduce your rental capacity.
* Renting the product does **not** reduce your Shopify sellable stock.

This keeps your rental availability predictable, even while the same product continues to sell as a regular purchase.

You manage rental capacity under **Shopify Admin** → **Circuly Rental & Subscriptions** → **Rentals** → **Inventory**.

<Info>
  You set a dedicated **Units available to rent** figure for each rental
  product, and it stays independent of your Shopify stock count.
</Info>

***

## Setting rental capacity

When you make a product rentable in the setup wizard, you enter **Units available to rent** — the number of units that can be out on rental at the same time.

<Steps>
  <Step title="Open the Inventory area">
    Go to **Shopify Admin** → **Circuly Rental & Subscriptions** → **Rentals** →
    **Inventory**.
  </Step>

  <Step title="Add or open a rental product">
    Start the setup wizard for a new rental product, or open an existing one
    from the **Inventory** list.
  </Step>

  <Step title="Set Units available to rent">
    Enter how many units can be rented simultaneously. This number is your
    rental capacity and is tracked separately from Shopify stock.
  </Step>

  <Step title="Save">
    Save the product. Customers can now rent it up to the capacity you set.
  </Step>
</Steps>

You can change capacity later at any time: open the product from the **Inventory** list and resize it up or down.

### Pooled vs individually tracked units

Most rental products are **pooled** — any unit is interchangeable, so you only need to track a total count (for example, "8 helmets available"). If you need to follow each numbered unit on its own, **individual tracking** is an advanced option that lets you register every unit (for example, by serial number). For most stores, a pooled count is all you need.

***

## Shopify stock tracking must be off for rentals

Because rental capacity is tracked separately, Circuly ignores Shopify's own stock count for rental availability. But Shopify still controls whether a customer can complete the purchase at checkout — and that can silently block your rentals.

<Warning>
  If a rental product's variant has Shopify **inventory tracking turned on** and
  its policy is set to **"Stop selling when out of stock"**, then after a few
  normal Shopify sales, Shopify will mark the variant as sold out. At that point
  Shopify **blocks customers from completing the rental at checkout** — even
  though rental units are still free. To prevent this, the setup wizard will not
  let you make such a variant rentable until you fix it.
</Warning>

To make the variant rentable, fix its Shopify settings:

1. In Shopify Admin, open the **product** and the affected **variant**.
2. In the variant's inventory settings, either:
   * Turn **off** **"Track quantity"**, **or**
   * Change the policy to **"Continue selling when out of stock"**.
3. Save the change in Shopify.
4. Return to the rental setup wizard and make the variant rentable.

<Note>
  Either fix works on its own — you do not need to do both. Turning off tracking
  is simplest if you don't rely on Shopify stock counts for that product.
</Note>

***

## Next steps

<Card title="Rental setup" icon="arrow-right" href="/docs/mintlify/rental-setup">
  Walk through making a product rentable, configuring rental terms, and going
  live.
</Card>