arnarn - 5:35 pm on Dec 13, 2007 (gmt 0)

The most recent example where this happened, the purchaser was in Australia with the card issuer being in GB. All is legit and the customer has purchased before.

What was interesting in this case is that they were able to process is charge w/o address verification but when (after customer's approval) I had to charge a small amount extra for shipping, it declined the same card on AVS no match.

We've had other cases (international orders) where us manually adding the extra shipping onto a customers card did not affect how AVS was handled.

I don't know who (what system/subsystem/entities) actually does the AVS, but it looks like somewhere along the line there is an inconsistency in when AVS gets invoked.

Who makes that decision for a card (e.g. is it Authorize.net) and why would the decision (international vs non-international) vary when it can be demonstrated (documented issuing financial institution) that the card is outside the US?

We are OK with how AVS is handled in the US, it's just the international orders / international cards that we'd like AVS to keep its "paws" OFF!