I guess you are following their criteria which I have just copied from the TSB online banking change memorable information page. Enter your new memorable information: (you should use 6 – 15 characters, at least 3 letters and 1 number, no spaces, hyphens or special characters, not your username or password information) Ed-1 Posts: 4,039 Forumite Source: https://forums.moneysavingexpert.com/discussion/6301442/tsb-internet-banking-mem-info.
