Block Shipping Methods

This feature allows you to block any shipping method(s) from being used when it is not compatible with specific item(s) that have been added to the shopping cart. The ability to block shipping methods in your Yahoo! Store saves your customer service department time and makes it clear to your customers what shipping options are available.

For example:
If you have an item that cannot be shipped via air, you can block all air shipping methods when that item is present in the shopping cart.