FoxyCart can pass along an optional `orderRef` number, supplied by the customer or an integration on the checkout page. This value will show up in the Cardstream backend. To take advantage of this, pass in a name=“gateway_order_reference” value=“foo” value in the checkout form (replacing foo with your desired value). One way to do this is through the Custom Checkout Fields option in the templates configuration settings of the Foxy admin.
Cardstream have some test cards listed on their site here.
Details on different response and error codes can be reviewed here.
If you have any questions for Cardstream, they can be contacted at https://cardstream.com/contact.
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