Using IN/DO will have more of a safeguard opposed to NN/DO. The price codes set up under sech debtor will determine which rates is used and in which order. For example, Inspiring Vacations has the below set up
The system will apply rates according to the price code order (from top to bottom). If no DO rate is loaded, it will follow down the chain until it finds the next available price code. Using seashells as an example, it will apply the NN rate next. However, because Inspiring vacations does not have the IN price code attached to the debtor, the system will not return a rate for them (which is what we want because rates restricted to international agents are not available for domestic agents to book). If we load an NN rate only, the system will always return a rate for Inspiring vacations even if the rate is not available for DO agents. It’s important that we load the correct price codes otherwise we risk making rates available to agents where they may not be valid.