There is not sufficient inventory to fulfill this shipment
Warning message "There is not sufficient inventory to fulfill this shipment" doesn't allow label to be printed. If user elects to not have ShipStation track inventory, why can't the label be printed? This is a huge inconvenience. I'm unable to get a timely response from your support team (have to wait 3 days) and I have to use a backup shipment method. Not good.
Steven Kay Rent Party commented
I'm having the same problem and cannot figure it out.