Or, why even run Year-End in AP and AR? The Year-End gives the benefit of mostly accurate YTD figures and batch numbers that start at 1, for those who care about those 2 things. But the process requires purging the AP batch lists and the associated Posting Journals.

The Period-End process in AP and AR is important but the Year-End process is not essential, apart from users with high volumes or users who rely on the YTD figures.