Hi Yue Hao,
Both the parameters allow you to setup a tolerance for e.g. if you sent a PO for price 100.50 and lets say you get invoiced for 100.60 or 100.40 against it would you like to stop it from reconciling? may be not so you can specify the
"Application.Invoicing.SkipAmount" parameter - if you want to specify tolerance in amount
and
"Application.Invoicing.AutoAcceptAmount & Application.Invoicing.AutoAcceptPercentage" parameter - if you want to specify tolerance in % value as amount may vary drastically based on the actual PO value.
Hope this helps.
Regards
Vilas