Customer is using "Replace alternative item defaults on sales lines" feature which is working fine for HQ. 

However, they also want to implement such a feature to work with retail Ecommerce B2B website, not only SCM.

The scenario is that B2B customers buy spare parts or items through the website and due to huge number of parts available sometimes they're not available or there's a replacement. 

If the order is through HQ and the feature is in use, it works fine and we can automatically replace the item if there's an alternative setup for it.

However, if the order is created from the B2B website, the CST doesn't get a notification or a prompt that this item isn't available, or if there's a replacement for it. This has to be done manually from HQ and due to that, sometimes the replacement they get is a complete different item, or a much more expensive item.

So, if we can implement that the same feature for Retail Ecommerce B2B websites that would be great as many business will rely on such feature especially for selling spare parts that has many alternatives.