What is justification for a Replaced System Sustainment Plan (RSSP) waiver?

A Replaced System Sustainment Plan (RSSP) waiver may be justified when the existing system's sustainment requirements are deemed unnecessary or overly burdensome due to the introduction of a new system that provides similar capabilities. It can also be warranted if the costs associated with maintaining the current system outweigh the benefits, or if the new system offers enhanced efficiency or performance. Additionally, a waiver might be considered if there are significant resource constraints or if the transition to the new system is expected to occur within a short timeframe, thereby minimizing the need for extensive sustainment of the replaced system.