The print services contract is recorded as a machine in Readysell. Each machine may have many meters. Meters are used to track equipment usage. Meters can trigger routine service calls, replacement of consumables and periodic invoicing. Cases track ad hoc service requests in respect to the machine placed by the customer. Service orders can be generated for machines manually due to equipment failure or a case raised by the customer. Service orders can also be generated for routine maintenance as specified in the contract.