If a collector allows refunding you can activate this in the Collector routing details by checking the Refund Allowed check box. Set the maximum transaction age in the Refund Limit text box.
The system administrator will set a refund limit in the collector details. If the limit set in the routing is zero, the value from the collector will be used. If the number of days is higher than the value in Collector, the maximum from the collector will be used.
The value in Collector (set by the system administrator) is set system wide where the value in Collector routing can be set for each company separately.