They all look like that - in original invoice form.
PHS generally whacks off/crops the excess at the bottom before running the copy.
Yours is like John said, an example where the dealer used private bank financing to pay PMD for their cars. (Code B in the prefix)
This has nothing to do with how the customer paid the dealership. fwiw
Here is an example of one where the dealer used GMAC to pay PMD for their cars.
(Code A in the prefix)