An aggregate contract is used to bill usage in all the single contracts linked with that aggregate contract. When single contracts are linked with an aggregate contract, usage is not billed separately for the single contracts. Instead, the system calculates the defined usage volumes and the actual usage volumes for all the linked single contracts. Any prices defined in single contracts (such as USD 0.05 per copy) are ignored. Instead, the usage price defined for the aggregate contract is always used. As a result, you have to define a usage price for each usage function in the aggregate contract (as a price agreement or condition master record). If you do not define this price, the aggregate calculation will be incorrect.

The system bills the difference between the actual usage volume and the agreed volume.

If pool calculation results in a deduction volume, the system redistributes this volume to the single contracts in order to reflect the correct values.