Primary Rates May Reference Many Sub Rates

There is no limit to the number of sub rate schedules that can be referenced on a primary rate schedule. If multiple sub rate schedules are defined on a primary rate schedule, the primary rate schedule defines the invocation order of each.

A bill segment that is calculated using a rate will contain separate bill calculation details for each primary rate schedule and sub rate schedule used in its calculation. Please be aware of the following special scenarios that can affect the number of bill calculation details on a bill segment:

• If a given primary or sub rate schedule has multiple rate versions effective during a bill segment's calculation period, a separate bill calculation detail will be created for each version of every primary and sub rate schedule.
• It is possible for a sub rate schedule to not contribute any charges to a bill segment (for example, if its rate components have eligibility rules that inhibit the creation of calculation lines). If a sub rate schedule does not contribute additional charges or service quantities to a bill segment, the system will suppress the bill calculation detail. In other words, an empty bill calculation detail is not created if a subsidiary rate schedule contributes nothing new to a bill segment.

An adjustment that is calculated using a primary rate schedule will contain a separate calculation line for every rate component on the primary and sub rate schedules that contribute charges to the adjustment.