The present invention provides methods and systems for defining financial transaction components; defining mapping rules for taking individual financial transactions and breaking them down into their components, such as production services, billing services and settlement services. A data processing system in accordance with one embodiment of the present invention, creates a transaction instance corresponding to a financial transaction, creates a production service instance linked to the transaction instance by a first relation instance, and creates a billing service instance linked to the production service instance by a second relation instance. The data processing system, may also create other production service instances linked to the transaction instance using other relation instances, as well as, other billing service instances linked to the production service instances.