How to change a fiscal period after the period is open and no transactions have posted to them

To update the fiscal period if open and ONLY when data is not affected:

Review the fiscal periods in the year to be changed and note the date and period number
Turn off the accounting tasks.
Have everyone exit from Sage X3.
Go to Table Maintenance (GMAINT) and select Table PERIOD.
Find the record(s) that needs to be adjusted
Adjust the period begin and end dates as needed and Save
Review the periods in Fiscal Periods via the X3 menu to be sure all looks correct
Turn on Accounting Tasks
Process transactions as normal.

These steps only apply if no data is being affected for the periods being changed. If data resides in the periods being changed, see the Related Resources. It may be necessary to contact your business partner for assistance.