Seeking to simplify procedural requirements, Sebi plans to put in place a one-time single registration process for depository participants to operate on both depositories. The proposal, which would replace the current practice of requiring separate registration certificate to operate in on both depositories (CDSL and NSDL), would be discussed in Sebi's board meeting on November 19, Wednesday, according to official sources.

Source - http://www.business-standard.com