I want a rule that would allow us to charge UPS shipping to recipient.
Currently, we are able to set up a rule that charges a 3rd party for
shipping, which on face, should be the same thing. However, it actually
costs the recipient more to do it this...
Yes! Add product via API is essential. There is a weird quirk with the
shipstation api that does not allow an order to be updated with product
information unless the product contained the information before the
order was created. But the only way to ...