Scammers place large (commercial) orders for merchandise and then either pay with counterfeit checks or ask for invoices or store financing that they don't pay. Typically, they ask businesses to send large orders before the payment is verified and may insist your business pay shipping charges on the order –so the business winds up losing both merchandise and money.
Scammers may use the names of known institutions (for example, a university in another state) or claim to be arranging a purchase remotely from outside the country.
Warn employees to alert management to any large order where the buyer is asking for unusual payment or shipping arrangements. Government agencies and universities would not normally finance payments through a store.
Look for mismatches in information, such as someone claiming to place a commercial order for a large corporation but using a free email service like yahoo or gmail.