Interoperability among Exchanges/Clearing Corporations was advocated by SEBI. (A clearing corporation ensures that your stocks and funds are settled for each trading day.)

Currently, NSE trades are handled by NSE Clearing Limited, whereas BSE trades are cleared by ICCL. Trades made on both the NSE and the BSE (Equity, CDS, and NFO) are settled through a single clearing organisation thanks to interoperability across clearing companies. NSE Clearing Limited has been picked by trading portal to clear all of its trades.