My purchase orders have always had the terms stated as "0.00%/0/30". Every vendor I have dealt with has had no question that it signified a net 30 account with no discounts for early payment. Suddenly, I have one vendor demanding to have it read "0.00%/0/Net 30". Is the "net" absolutely necessary for legal reasons in standard practice? This change will require my IT department to make a change to the format in the software, so it's not as simple as typing it in. I was hoping to find a specific guideline (FASB, GAAP, etc) to illustrate if this is not a requirement. Thanks for any help.