zipcode & billing address

The billing address and billing ZIP Code from the order are already sent to Authorize.Net. Do you mean that you need to send a different address and ZIP Code on a per-card basis? One workflow would be to change the order’s billing details before making the payment.

Yes, I mean that I would need to send a different address and zip code on a per-card basis.

I am worried employees will forget to change the order’s billing details before submitting payment.

Would it be possible to add a text box to manually type in billing zip and bill address similar to the current box’s for Expiration Date and CVV code?

Thank you.

If they would forget to change the address, then they might forget to enter the address in the proposed fields. Maybe what you need is just a contextual reminder to remind the employee to change the billing address. We could work on a simple code snippet that would add such a reminder to a prominent location in the form. Maybe something like this would work?

The issue I see with adding those fields is that it would create a mismatch between the new numeric details and the rest of the address fields from the order. To resolve any contradictions, I would have to either only send the new details and omit all the other billing details from the order (which may be surprising to the user), or I would have to provide all the usual address fields (which would add a lot of duplication). I don’t really like any of these options.