The context of this question relates to online sales and batch requests for sales.
In the system I'm working on, the correct "type" of card sometimes isn't captured. For example, the system only recognizes the major types of cards (i.e. MasterCard, VISA, Discover, AMEX), and lumps other types of cards (i.e. Diner's Club, JCB) into an "Other" category that we have to manage.
So when it comes time to process those credit card transactions, we don't have the type.
We can of course program new logic to attempt to determine the type of card based on the number before sending it to Vantiv, but I have two questions:
1) If the credit card type is based off the credit card number, why do we have to program logic to determine that? Couldn't that be figured out on Vantiv's side?
2) Can we simply not send the "type"? Or is this a required field?