...
System Management > System Rules > System Configuration > Payroll tab > Check Stub Info pop-up window AND/OR Check Info
Resolution/Fix/Answer
With the Tax Id The "Print Full SS# on Check Stub set to Y, PENTA is programmed to show the full tax ID for Canadian payroll. The setting for showing only the last four digits of the SS# is only for USA payroll" applies to both Canada and USA. If this is not working for you then you may need an upgrade to the latest version.