Navigation to setup the periods

Navigation to setup the periods:

1. Ensure that the  GL Period  has Status=Open:
Setup > Financial > Accounting > Open and Close periods
(or)
Setup > Open and Close periods

2. Ensure the Purchasing Period is Open:
Setup > Financial > Accounting > Control Purchasing Period

3. Please note that the Inventory period must also be Open:
Accounting close cycle > Inventory Accounting Periods

Query to check the status of the Periods