Ind. Code § 26-1-2-310
Unless otherwise agreed:
(c) if delivery is authorized and made by way of documents of title otherwise than by subdivision (b), then payment is due, regardless of where the goods are to be received:
(d) where the seller is required or authorized to ship the goods on credit, the credit period runs from the time of shipment, but postdating the invoice or delaying its dispatch will correspondingly delay the starting of the credit period.
Formerly: Acts 1963, c.317, s.2-310. As amended by P.L.152-1986, SEC.133; P.L.143-2007, SEC.10.