Originally Posted by ridefar

It depends if it was booked through a Travel Agebt. If it was you will not be able to change it except by dealing with the TA. Depending on the fare class changing it may or may not cost you a change fee and or a TA booking fee.

if the company just bought it directly from AC (through the website for example) then you can call AC and change it and charge any fees to your own card. I don’t believe you will need access to the corporate card to do this as long as the ticket is in your name. Beware that if you have to cancel then you will lose any charges to your personal card — AC can only reimburse one card for a refund.