Users who don’t qualify for promotions present an upselling opportunity: you can make them aware of what they need to do in order to receive a promotion. For example, you can encourage users to purchase more products by displaying a “Buy one more box of light bulbs and get the next one free!” message on a checkout page.
In order to display upsell incentives for a given promotion, you need to describe the circumstances under which those incentives are appropriate. For example, if a promotion gives free shipping to orders over $2500, you might want to display an upsell incentive when orders are $2400 that says “Free shipping if you spend $100!” You specify these circumstances as Promotion Upsell items. A Promotion Upsell has three main parts: a rule that says when it applies (orders greater than $2400), media items that display when the rule is met (“Free shipping if you spend $100!”), and a priority. When the Promotion Upsell rule fits for a user’s circumstance, the user’s profile receives a reference to that Promotion Upsell.
You can also define an Upsell Action, which is a list of upsell products. For example, products that cost $100 could make up your Upsell Action. Buying one such product qualifies a user for the free shipping promotion.
Once you have defined the Promotion Upsells and Upsell Actions for a promotion, you need to decide how those Promotion Upsells will be detected. You can design scenarios to add items to a slot that are accessed in a page or send an e-mail when a user obtains a Promotion Upsell.
Follow these steps in this order to create alert notices about a user’s proximity to a promotion:
- The Page Developer creates the text and media that advertises how close a user is to qualifying for the promotion. These items are called media items and you will need to know where they are located in order to complete the steps below. 
- Create the promotion. See Creating Promotions for instructions. 
- Describe the Promotion Upsell, when users qualify for it, and the promotion it is associated with. See Creating Promotion Upsells. 
- Specify upsell products in an Upsell Action. See Working with Upsell Actions. 
- Enable the upsell option on the promotion. See Updating the Promotion. 
- Activate the upsell notification by creating a scenario that uses it or instruct a page developer to incorporate it into a JSP. See Detecting a Promotion Upsell. 

