A system that handles information that is necessary for the conduct of day to day business but does not materially affect support to deploed or contingency forces in the sort term would be categorized?

Such a system would be categorized as a non-mission-critical or administrative system. While it supports routine business operations, it does not directly impact the immediate effectiveness or readiness of deployed or contingency forces. Its primary function is to facilitate day-to-day administrative tasks rather than operational objectives.