Originally Posted by
lwildernorva
I am at a loss, however, as to why Amex doesn't make it obvious which zip code they're looking for when you register a new payee. Thinking it through, it's probably more apparent that they're looking for the payee's zip code, but that could have been stated clearly on the page.
I spent a good hour on entering my zip, then called CS. It's the vendor's zip.