Hi Andre,
The purpose is mainly from the days of dot matrix-printed checks and a status of Void can be assigned to the check if there was a printer jam and not all of the checks printed OK. Setting a check to Void status in Check Reconciliation doesn't really do anything other than change the status from Outstanding.
You likely want to Reverse checks rather than Void, because Reverse generates reversing GL entries and un-pays invoices associated with the reversed check.
You probably also want to set the AP Company Profile option to 'Disallow voiding checks in reconciliation' to prevent checks from accidentally being voided instead of reversed.
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Regards,
Softrak Tech Support