[derefr]

Presumably, somewhere within the bowels of American Express, there's a test card for testing the Centurion large-payment verification process, where feeding it through a merchant and having them run a verification on it, will get them routed to a mock concierge on Amex's side (or rather, a human concierge diverted to follow a special mock workflow script.)

[arthurcolle]

"Everytime you run your test suite, someone actually gets up for every test case, runs over to the copy machine, and creates physical carbon copies for DHS."