Use business services with expenses Manage the relationships between business services and their expenses with allocation units and cost centers. Define a cost centerCost centers are a commonly used reference between financial systems and IT. Cost center records represent business entities, and have a related list of CI Cost Center Relationships that measure the cost center's consumption of business services. Default allocation ruleFor every expense line generated for a business service, the default allocation rule Process Svc-CC Relationships will attempt to process the expense and create allocations for each cost center that is consuming the service. Define an allocation unitAllocation unit records define the capacity and usage of a business service.