liability for accounting usecase12 u2014 past flight credit adjustment the system enables the passenger to request award points for a previous flight for which points have not been awarded to the passenger this could be because the passenger did not have a frequent flyer account or that the booking was made without associating it to their frequent flyer account usecase13 u2014 transfer points between loyalty accounts the system enables transferring points from one passenger 39 s account to another this function must be limited by role permissions with an audit trail of which agent did the transfer usecase14 u2014 create a new award points rule the system enables an analyst to use a rules engine ui to setup a new award points rule using any of the available criteria in the rule engine usecase15 u2014 unpost award points from traveler 39 s account the system enables the deduction of points previously posted for a flight in the case where a passenger unboards a flight such as during an irop when the traveler either re boards the same flight or takes a different flight the appropriate points will be awarded for the flight actually flown usecase16 u2014 modify a currently active award points rule the system enables an analyst to update a rule that is currently active for rule modifications a version will be kept of the rule prior to editing if the current date is prior to the effective date of the rule being modified the system may permit the rule to be deleted if the current date is between the effective and discontinue date of the rule the original rule may be discontinued as of the current.