Periodic Amortization Accrual date Accounting date consideration

Summary:

Customer needs periodic amortization of leases, so we have chosesn periodic amortization calculation method, but customers accounting calenar is singapore calendar which has different dates eg: December period ends by 30th Dec per our singapore calendar but the periodic amortization method considers 31st december as accounting date when accrual process is executed, this makes the december amortization to be accounted in january month instead of December month.

We could see that daily amortization calculation method is able to consider the accounting date as 30th December per our accounting calendar, but client needs periodic amortization as they want the amortization amount to be same every month, kindly advise how to make teh periodic amortization to consider the accounting date for accruals as 30th dec per our accounting calendar.