Hello Lilianne,
Is it really the Year end in Payables that you are concerned with?
Adagio Payables does not require you to perform the Year End function. If you are not concerned about the Vendor YTD Statistics including these checks, you can proceed.
If it is Ledger that you are concerned with, I hope that you are using Ledger 90. It allows you to open 'Next Year' without closing the 'Current Year'.