Eligibility for infrastructure debt funds requires experienced key personnel and sponsor track record before registration under mutual fund rules. Regulation 49N permits an existing mutual fund to launch Infrastructure Debt Fund schemes only if it has an adequate number of key personnel experienced in the infrastructure sector, and allows grant of a registration certificate under Regulation 9 to applicants proposing only IDF schemes where the sponsor or its parent has at least five years' experience in infrastructure financing and satisfies Regulation 7; 'parent company of the sponsor' means a company holding at least 75% of the sponsor's paid up equity.