A recent change to the process of getting BOCP certifications has caused some confusion among users, as indicated by this Forum Thread. It appears that you now need an SAP User ID before you can register for any certification exams on BO products. Everyone knows that I am not a big proponent of the BO certification process, but if you do decide to register for an exam, say through the Pearson Vue site, you will now need an SAP ID to do so.
If your company has a support contract you may already have an SAP ID. If not, you can get one from SAP Central Registration by calling (888) 777-1727.
If anyone has more information to add on this change please let me know. And thanks to Gordon Portanier of Crystalize in Toronto for tipping me off to the change.