2 users buy at the same time

I have products with limited quantities. And I want to create an action that checks the stock before sending the payment request to stripe, I contacted support no solution is there anyone here who has a solution

You can add a condition on the Payment action with the Quantity for the product is greater than 0… If you need more help, you will need to share a little bit more about your apps setup.

I am creating a marketplace, and the customer goes to a product page, presses a button to display a sheet with the stripe payment marketplace component. The basic setup.