# Cancellation settings

> STEP 2-7

Set up the cancellation integration (Cancel Order) used by Try Before You Buy.
If you have a Cancellation contract, this is already configured and can be skipped.

1. Go to [Settings > External service integrations > Data integration settings](https://rcmr.io/settings/integrations/integration/target) > the **Exchanges and cancellations** tab
2. Select "SHOPIFY" for the main cancellation integration (Cancel Order) and click **Save** at the top right

    ![The Exchanges and cancellations tab of the data integration settings. Select SHOPIFY from the main Cancel Order dropdown in the cancellation section.](images/02c_cancel-order.png)

> **注意: If you have an OMS integration**
>
> Set up the OMS integration first, then register the OMS as the main cancellation integration (Cancel Order) and SHOPIFY as the sub integration