Have a situation where an order for recycling comes in and depending on the line items, the item might incur a charge for recycling, or if it’s a commodity with value, say copper pipes, the customer might get paid for that item. Depending on the items and quantities involved, an invoice might be positive: we charge the customer, or negative: we pay the customer. Until everything is identified and weighed, we don’t know which it will be. PO’s don’t allow negative items, so it can’t be a PO. All Savers Provider Portal