 Other responsibilities of the SDN include providing the necessary infrastructure and support for the dating industry, as well as to ensure the professionalism of dating agencies through an accreditation council that was formed in 2007.SDN's role in the industry has not always been that of facilitating and accrediting.When it was first established in 1984 as SDU, it functioned on its own, organising activities for its members without the help of commercial agencies.