This error indicates that a deposit entered or imported into A-T-F Payroll contains a 0 for the Deposit Quarter.  To find this deposit, click on Deposits from the A-T-F Payroll Menu, then select A. All Deposit Types. This will list all deposits that have been entered. The second column will have a heading of T S Q M.  Look under the letter Q until you find a deposit that has a 0 value. Highlight that deposit and click Edit. Enter an appropriate value for the Quarter (1..4) and click Save.  Repeat these steps until there are no checks with Quarter equal to 0.