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# What if a customer purchases a license key that is not in stock anymore?

If your customer purchases a digital product configured to use your own license keys (imported into the "License Keys" tab) and if there is no license key in stock anymore at the time of purchase, here is what will happen :

1. Your customers will see a message on the order confirmation page to let them know that the license key is out of stock and will be sent soon
2. As the merchant, you will receive an email from the app to let you know that one of your customers is waiting for one or more keys. In the app, in the "License Keys" tab, you will see an alert message and next to this alert, a button will be displayed to list all of the customers waiting for a license key. On each customer lines, you will have the ability to send the license key - your customers will then receive a new email with the license key they are waiting for.