To safeguard investors of firms listed on non-operational bourses, capital market regulator Sebi today asked to all such companies to get listed on the nationwide stock exchanges within 18 months.
The promoters and directors of such companies who would fail to list even after the extended time of 18 months would have to undergo 'stricter scrutiny' for their any future association with securities market.

Source - http://economictimes.indiatimes.com