Overview
At the beginning of the next period, reverse any of the prior period reversing entries.
GL > Reversing Journal Entries > Reverse Prior Period Entries. 
| Table of Contents | ||||
|---|---|---|---|---|
|
Detail
Start/End – these dates will default to the current period and you cannot change this..
Posting Date – Date the reversing entries will post, the system will default to the ending date of the current period but it can be changed.
...
If you try to close a period without processing the reversing part of an entry entered, a message will appear on the Sub-Ledgers Status screen stating there are reversing entries for the current period that need to be processed. If you do not reverse entries, and you try to run this same option in the following period, it will not allow you to run the reversal. A message will appear stating "There are un-reversed entries from the prior period. Please change to the previous period and reverse those entries."
...