The invention herein discloses technological advancements as they pertain to telecommunications technologies and subscriber profile management systems. In particular, the invention relates to a vendor independent mediation layer utilizing subscriber management objects articulated through certain methods, systems, algorithms and logical steps outlined herewith. Thus, the invention presents a computer program product implemented secure transactional-based system and method of accessing subscriber information distributed among a base of heterogeneous (multi-vendor) HLRs, and other such multi-vendor telecommunications network elements.