# Avail Coupon

After receiving the coupon via email, customers can use it to avail discounts at the time of checkout. 

It will show an error in the following situation:

* If the coupon is used once, the extension will not allow customers to reuse the coupon.
* If the customer enters an incorrect coupon code, it will show an error message. 
* Any other issues with the coupon code application.

**Checkout Page**

<figure><img src="https://807210804-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F8wMgNeFnYjVGQmgdxMv4%2Fuploads%2FlwDtlThhCvwlT2459UZo%2FCheckout-Authorized.png?alt=media&#x26;token=7c4559dd-ae44-4530-b4c0-8ce6f17c09e7" alt=""><figcaption></figcaption></figure>

**Shopping Cart Page (Logged-in Customers)**

<figure><img src="https://807210804-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F8wMgNeFnYjVGQmgdxMv4%2Fuploads%2FHKjeHR35rTojHXESgLOD%2FCart%20Page.png?alt=media&#x26;token=ab0cf44a-85e6-4240-b30f-b5684f051a4d" alt=""><figcaption></figcaption></figure>