The CyberSource payments system seems to have a method of preventing
duplicate transactions, as covered here:This functionality looks at the
Merchant Reference Number (MRN) of successful orders submitted within
the last 15 minutes of a previous order...
HiWhat options exist to facilitate payments to banks or credit card
companies? Are there programmatic APIs for banks that, say, perform the
same actions as paypal might? I'm looking for libraries or options that
aren't through an existing provider; t...
Use the ""Create Account" button - instead of duplicating. There seems
to be a number of bugs if you use the Actions "Duplicate" method of
generating a new sandbox account.Paypal - provides two examples for you
when you first visit the sandbox accoun...
That parameter comes from the result of a capture API request. Using
that for a refund request is called a follow on refund request and
requires the capture to happen first. If you want to do a stand alone
refund you don't pass that parameter but you...