> For the complete documentation index, see [llms.txt](https://docs.2checkout.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.2checkout.com/marketing/marketing/a-b-testing-guide/a-b-testing-campaigns-for-promotions.md).

# A/B testing campaigns for promotions

## Overview

Set up A/B testing campaigns for your promotions to identify whichwhat type of discount is more efficient.

## Requirements & limitations

* You can test up to five promotions in one experiment.
* You can only select pairs of promotions that have at least one common product.
* Promotions applied through the COUPON parameter directly into the URL are not taken into account in the A/B test. "Auto-apply" promotions, however, are taken into account. Nonetheless, promotions with the “Auto-apply” function will not appear in the A/B testing available promotions drop-down.
* Only regular promotions are available for use in A/B testing campaigns.

{% hint style="danger" %}
**Important!** When the shopper places the order, the test is considered successful regardless of the order or payment status.
{% endhint %}

## Setup

1. Go to the [Promotions](https://secure.avangate.com/cpanel/promotions.php) page and define the promotions that you want to test. Choose between percentage-based discounts and fixed discounts.
2. Navigate to the [A/B Testing](https://secure.avangate.com/cpanel/abtest.php?action=overview) page and click the [Campaigns](https://secure.avangate.com/cpanel/abtest.php) tab.
3. Scroll until you find the **Promotions** section and click **Edit Campaign** on an inactive campaign.
4. Fill in the details of the new campaign, such as the campaign name, maximum number of tests and the date when the campaign should end.
5. Create a new scenario by selecting a promotion from the drop-down menu and assigning the percentage of traffic you want to go through it. You can choose between existing promotions and assign them as A/B testing campaign variants. You can also test specific promotions against using no promotion at all by checking the **No promotion** option.
6. Click **Add Scenario**.
7. Repeat steps 5 and 6 until you have used the entire available traffic.
8. Click **Save campaign**.
9. Go back to the [Campaigns](https://secure.avangate.com/cpanel/abtest.php) tab and click the **Start Campaign** button when you want the campaign to begin.

## Where can I see what promotions are used in my A/B tests?

When you open a promotion's configuration page, a notification informs you if the promotion is being used in an A/B test at that moment.


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