> For the complete documentation index, see [llms.txt](https://penida.gitbook.io/big-digital-download/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://penida.gitbook.io/big-digital-download/miscellaneous/license-key-what-if-a-customer-purchases-a-license-key-that-is-not-in-stock-anymore.md).

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

If your customer purchases a digital product with one of your own license keys BUT you've ran out of license key, the following will happen:

* your customer will be notified the license key will be sent soon
* you, the merchant, will see an alert under the "license key" tab saying one (or several) customers are waiting for their license keys to be sent.
* you, the merchant, will be able to add license keys then you'll find a button to send said license key to your waiting customers