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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 AdminCirculy Rental & SubscriptionsRentalsInventory.
You set a dedicated Units available to rent figure for each rental product, and it stays independent of your Shopify stock count.

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.
1

Open the Inventory area

Go to Shopify AdminCirculy Rental & SubscriptionsRentalsInventory.
2

Add or open a rental product

Start the setup wizard for a new rental product, or open an existing one from the Inventory list.
3

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.
4

Save

Save the product. Customers can now rent it up to the capacity you set.
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.
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.
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.
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.

Next steps

Rental setup

Walk through making a product rentable, configuring rental terms, and going live.