DESK Standards Epc Again, you could implement a credit and collection system such as Lockstep Collect to notify you when an invoice for a customer is missing a purchase order number.
Know your competitive advantage with respect to other suppliers. Underscore may be freely distributed under the MIT license. Remember, tax, include a copy of the purchase order documentation when sending your invoice. How to Deal With a Habitually Late Paying Client Due.
Also, businesses need money to survive, you could take part of the payment now and the rest when they can afford it.