While creating any entry, system validates if dates (like Posting Date, Transaction Date etc.) belong to Fiscal Year selected. If not, system through an error message saying:
Date ##-##-#### not in fiscal year
You are more likely to receive this error message if your Fiscal Year has changes, but new Fiscal Year still not set a default. To ensure new Fiscal Year is auto updated in the transactions, you should setup your master as instructed below.
Create New Fiscal Year
Only User with System Manager's Role Assigned has permission to create new Fiscal Year. To create new Fiscal Year, go to: