When you void a check, the money is added back to the account the check was written against and a reverse transaction is made to the matter billing activity, so the client will not be responsible for the charge on the bill.
Do one of the following:
To void a trust check, select Trust > Void Trust Check.
To void a check written against an invoice, select A/P > Void Checks.
To void a payroll check, select Payroll > Void Payroll Check. The Void a Check
window appears.
For Cash Account Number select the cash account the check was written against.
In the Check Number box, enter the number of the check you want to void.
Click Retrieve.
The window expands to show information about the check.
Under Void Information, check Keep AP record(s) to retain the check information in the system so that you do not have to re-enter the information. NOTE: This feature only works for checks written in Abacus Accounting version 2015 and higher.
Under Void Information, in the Void Date box, make sure that the date is the date you want to void the check.
Click Void.
TIP: If you need to re-enter the check afterward, re-enter it with the same details (except correcting whatever was incorrect), but add a .1 to the end of the check number. Abacus Accounting will not allow you to re-use the same check number, but this will allow the check to still be associated with the same check number when viewing your Check Register.