SRN-Security Reference Number
To sell your shares you will need the SRN number for each parcel of shares that you want to sell. The SRN is a unique number to each share parcel. You can find your SRN on correspondences sent to you by the company you own shares with, or on their share registry. This also includes Dividend Statements and Holding Statements. The SRN always start with the letter 'I' and has 9 digits.