Add "Transitory" Bucket to GRS

A key benefit of applying Information Governance to an enterprise is the ability to delete/destroy records that are not essential to the business process. Therefore by adding "Transitory" as a new Big Bucket record series, agencies can explicitly define what is a non-record, and apply a retention schedule such as 90 or 120 days. This can save agencies millions in reduced digital and physical storage costs, and reduce the cost of discovery.