The capital markets regulator said in a notification that the "issuance of observations (has been) kept in abeyance." It did not provide further details. NSDL last month filed its draft red herring prospectus with the Sebi for an IPO which is entirely an offer for sale (OFS) of 57,260,001 shares by existing investors such as IDBI Bank, NSE, SBI, HDFC Bank and Union Bank of India