Here is a common issue experienced during 1st of each Accounting year by many customers and the solution for the same.
Accounting periods have to be setup in Everest for each Accounting year to enable users to create documents & Transactions. User would get an error 'Not a valid period' if,
-Accounting periods are not defined for specific Accounting year
-Accounting periods are in 'locked' status
To fix the issue :
- Create Accounting periods and Accounting year under File > Setup > Accounting > Periods > New.
- Give a name for the Accounting year ie. FY2011 etc.
- Verify the start and end date of each Accounting period before you confirm.
- If an Accounting year already exists, the reason for getting 'Invalid Accounting period' could be, the period is locked. You can verify the status of Accounting period by selecting the Accounting year and hit > next. This lists all accounting periods for selected Accounting year and the status of each period.