AiD API WordBook
BPR - Business Profile Registration.
A BPR object represents data about a given user's enrollment to a certain business. This relation determines how a user can access that business' resources as well as their access access behaviors
PCR -Profile Cart Registration.
Yes, after a few months we finally found the answer. Sadly, Mike is on vacations right now so I'm afraid we are not able to provide the answer at this point.