When you create a Purchase Order for SanMar, you can transmit the Purchase Order to SanMar via their API.
Once you create a Purchase Order, eXtendSanMar presents a button to allow you to transmit the Purchase Order to SanMar.
You can view integration details between SanMar and NetSuite from eXtendSanMar subtab (to confirm if the submission was accepted by SanMar or if there were any data issues).