and device self test operations are ways of exercising a device windows nt trade mark records entries relating to software operations for example a time out or a failure in accessing an object device operations and communication operations for example failure to receive an expected response to a message these entries are referred to herein as u201c event logs u201d and the system application 95 allows the operator or engineer to view these event logs search and filter these event logs and copy these event logs to a diskette or print them out a u201c service tally u201d provides a list of the times at which a u201c service u201d has been requested for a particular device 18 since the tally was last reset typically only service engineers can reset a tally in this context a u201c service u201d relates to software used to access functionality provided by a self service device 18 for example u201c dispense cash u201d is a service associated with the cash dispenser device 18 f this allows the customer transaction processing object 86 to be able to issue a u201c dispense cash u201d request to the platform 70 together with the amount to be dispensed and the platform 70 provides the low level commands required to instruct the cash dispenser to dispense the amount of cash requested care should be taken to distinguish between two different uses of the word u201c service u201d herein the first use relates to software or an interface providing functionality to the control.