Example 1. V issues a credit card (the V card) that is honored by R, a retailer. When using the V card, C, a customer, signs a sales slip in triplicate. C, R, and V each retain one copy. Only the copy held by V is held by a third-party recordkeeper under section 7603(b)(2), even though R may issue its own credit card.
Example 2. R, a retailer, issues its own credit card (the R card) to C, a customer. When C makes a credit purchase from R using the R card, C signs a sales slip in duplicate. C and R each retain one copy. Because R keeps the copy in its capacity as credit card issuer, as well as in its capacity as a retailer, it is a third-party recordkeeper under section 7603(b)(2) with respect to its copy of the sales slip.
26 C.F.R. §301.7603-2