Changing Fiscal Year start and end date after setting it

1

Had the situation whereby initial test transactions were passed and the fiscal year was set.

Fixed it by using system console and following transactions

frappe.db.set_value("Fiscal Year", "2022", "year_end_date", "2022-03-30")
log(frappe.db.get_value("Fiscal Year", "2022", "year_end_date"))
2

is it possible to change the date range once set?

3

Yes, but only if the transactions are not already entered in that date range for which the new fiscal year start and end falls into.