Scale: tFLOW scaling vs. dpi resolution

When a file is scaled up to meet a specified size, what happens to the dpi?
tFlow can scale artwork to the size specified in the script (or via size dimensions supplied by a connected W2P storefront or print MIS) for a particular product. At the same time, it can also check the resulting dpi after scaling. 
Depending on the minimum dpi setting set for the product, the artwork can either Fail, Warn, or Pass preflight (depending on how you want the dpi variable set).