Serial Number History Search
Have you ever serviced an appliance that you thought was under warranty, then found out it was actually returned to the appliance dealer and re-sold to your customer? If so, you probably didn't get paid for that job. To help avoid this situation, you can take advantage of the Serial # History Search on the invoice header.
After typing in a serial number on the service tab of an invoice, you'll notice a History Search link automatically appears. Clicking that link will take you to customer history and show you all history for that serial number for ALL customers. If you happened to have serviced the same appliance for another customer you'll be able to see that here.