> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.coupontools.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How do I display unique promo codes / own imported validation codes on my coupon?

To **${color}[#000000](display unique promo codes)** on the **validation page of your coupon**, go to **Validation methods** in the **After Claim** in the **coupon builder** and enable **Display your own imported validation codes:**.


![](https://storage.crisp.chat/users/helpdesk/website/4c4cc617dc0a0c00/stap1_nef3pb.png)

A button will pop up next to it where you can manage/upload your own unique codes

![](https://storage.crisp.chat/users/helpdesk/website/4c4cc617dc0a0c00/stap2_kr3xu2.png)

Click on the pop up button and you will be redirected to the following page:



![](https://storage.crisp.chat/users/helpdesk/website/4c4cc617dc0a0c00/image_1e1i650.png)

Click on **+ import** and **write down the codes manually** on each row or **upload the unique codes with a .txt file**.


![](https://storage.crisp.chat/users/helpdesk/website/4c4cc617dc0a0c00/stap3_67cwmx.png)


![](https://storage.crisp.chat/users/helpdesk/website/4c4cc617dc0a0c00/stap4_qvrpfd.png)

Once you have uploaded those codes click on **Go Back** to go back to the coupon builder


![](https://storage.crisp.chat/users/helpdesk/website/4c4cc617dc0a0c00/stap5_irza61.png)

You will already see a unique promo code on the phone simulator of your coupon builder. This is to give you an idea of how it will look like on the customer's coupon.
[Unique promo codes can also be combined with a barcode](https://help.coupontools.com/en/article/can-i-upload-my-own-barcodes-9y849c/).



Keep in mind that, if you want to combine with your POS system then you will have to work with [API ](https://www.coupontools.com/en/api-and-webhooks). By integrating our digital coupons into your POS system, it’s possible to process mobile coupons directly into your POS system and validate them after usage.

Coupontools supports advanced JSON rest API. The Coupontools platform automatically assigns a unique validation code to every distributed Coupon.

Connect your POS system with the Coupontools API to validate your digital coupons using your POS system.

This solution needs development work of your POS supplier to set this up.