IDEA: Talk to your new customer’s AP person. Find out what will keep your invoices from being paid.

When setting up new customers, call not only their credit references but also their Accounts Payable clerk who issues payment checks and wires.  Call this person before any shipments are made and any invoices are cut and issued.  Ask what all needs to be done so that your company’s invoice when received by her department will be processed and paid without delay or problem.  Ask her what does it require to get invoices approved and paid on time. Note the person’s name, email address and direct telephone number into your accounting system for use in the future.