system may flow through server 16 and legacy systems 30 to cause the requested features to be made available for the subscriber 39 s account without any manual intervention poof application 20 may nevertheless ensure that change requests submitted to legacy systems 30 are compatible with existing features poof application 20 thus ensures accurate completely electronic delivery of order information from web site shopping carts to order generation and shipping for instance when a change request is submitted via poof application 20 order processing application 34 may also cause a user 39 s guide for the selected features to be shipped to the subscriber as part of the order fulfillment process to provide for a comprehensive order processing poof application 20 automatically utilizes all relevant information to ensure automatic flow through on the back end for legacy systems consequently poof application 20 may ensure that a subscriber orders only features that are available in the subscriber 39 s specific calling area only features that do not create conflicts with other features already on the subscriber 39 s account and only features that are not already being provided on the subscriber 39 s account consequently poof application 20 reduces or eliminates the chance that errors may be made during the ordering process poof.