1) Go to screen FOIDOCH

2) In the Doc Type block, enter CHK

3) In the Doc Code, enter the check number (see section above on how to obtain a check number)
4) Do a Next Block command (Ctrl-Page Down)

5) If there is a "F" to the right of the check number in the Check column, the check has been cashed; if there is an "X" to the right of the check number, the check has been canceled.