This training is designed to show you how to check the validity of your E-PIN
You can use same PIN to check same result as many times as you want but you can't use that PIN to check any other result.
Any PIN you plug into any result is permanently tied to that particular result. You can't use it for another result.
And if you make the mistake of using 10 different PINs on one result, you have caged those 10 PINs to that result for life. Those 10 PINs cannot be used for any other result.
So, multiple PINs can be used for one result but one PIN cannot be used for different results.
But in rare cases where an unused PIN throws validity error, it will be replaced.
This should answer our questions on this PIN usage.
Steps 1
Steps 2