In 1992, Leeson established the error account 88888 (eight is considered a lucky number by the Chinese), which, according to SIMEX investigators, he immediately began using to conceal unauthorized trading activities. While a legitimate error account numbered 99002 was known to BSLL, the 88888 account did not show on files or statements transmitted from Singapore to London. Account 88888 was known to SIMEX, but as a customer account, not as an error account. Leeson had to represent It differently to each group because he could not hide the existence of 88888 from SIMEX, and he could not explain its volume and balance to BSLL (but he could hide it from them).