Embodiments herein provide a systems and methods for managing short data service (SDS) in on-network and off-network mission critical data (MC Data) communication system. The various embodiments provide one-to-one SDS and a group SDS in the on-network MC Data communication system for a unidirectional communication. The various embodiments provide one-to-one SDS and a group SDS in the on-network MC Data communication system for a bidirectional communication. Further, the various embodiments provide a one-to-one SDS and a group SDS in an off-network MC Data communication system for a unidirectional communication.