The account.period should be renamed to account.servicePeriod and the description clarified from "Identifies the period of time the account applies to; e.g. accounts created per fiscal year, quarter, etc." to "The date range of services associated with this account" The comments section will be clarified to: "It is possible for transactions to be posted outside the service period, as long as the service was provided within the defined service period." The account.active property will be removed, and those the desire to communicate this as a period (over batch jobs that alter the lifecycle status) may use a local extension to handle this.