[zhte415]

Technically, yes. Source: Working with IT engineers working on credit card systems, it is fine but like all cards has to be worked through compliance modules.

Technically, not really: Source: Working in Banking Ops where red flags that should but don't exist in a system get raised by it. A single @23 million transaction is unlikely to bankrupt any bank but if approved by the CC system will probably be approved (a huge credit limit, or more commonly, internally approved balance/one-off credit) has to be there) then denied internally causing all sorts of trouble.

Transactions of $Xbns are commonplace in banking (non credit card, bank transfer) and credit card systems are certainly built for transactions of $100mns, though, as stated above, it would be immediately alerted probably to the bank's head of operations.

But, I've seen technology/operations mistakes that have had $100mns impact before. Usually a bit more obscure than buying something on Amazon.