The Reserve Bank of India (RBI) has rejected calls by stakeholders to continue case-specific exemptions from concentration norms for government-owned NBFCs, saying that doing so goes against a principles-based framework and creates avoidable regulatory uncertainty. In amended directions published Wednesday, the central bank also rejected requests for an increase in single counterparty limits for exposures to public sector enterprises. "While a case-by-case exemption was permitted earlier, most of such exemptions had a sunset clause which has since expired, and the exposure of these entities have been brought within limits," the RBI said.