The current list of merchant service preferred providers is very limited. As of this moment it is Citibank, Wells Fargo, Bank of America & Pamentech. Unless you are using one of these providers, you must use PCCharge or ICVerify to interface to the merchant service provider. If you use ICVerify or PCCharge, then you cannot process debit cards natively, and it is no solution to jump out of the tender window in RMS and process a debit card via PCCharge or ICVerify. The possiblilities for a cashering mistake are too great. I suggest making RMS robust enough to work with a broad range of merchant service providers, specifically First Data. First Data is the provider behind Wells Fargo and no telling how many others. I find it puzzeling if F.D. is Wells Fargo's processor, why F.D. can not also be a preferred provider as Wells Fargo is. Processing debit cards is a real money saver for merchants since debit cards cost much less to process than pure credit cards.
Thanks