These are really just claim checks, very common in businesses like shoe repair, laundry, etc. But they are not accounting transactions, so there is no necessary entry in Manager. However, you might find that sales quotes are useful, depending on the type of items you are repairing or maintaining. You can even set up non-inventory items for common services (like new soles on shoes) with predetermined pricing. When the repair is complete, copy the sales quote to a sales invoice.