Go to Items -> Inventory Status as of date to view the balance in CZK for the given warehouse.
This balance must equal the balance of the account (e.g., 132XXX), which can be found under Accounting -> Accounting Outputs -> Account Balances.
Next, check the transactions on the account (e.g., 132XXX) by going to Accounting -> Accounting Outputs -> Account Transactions. This output should contain only inventory documents.
You can find the complete procedure in the following video - Accounting Check at timestamp 1:05 - 3:10.
Further details on how to perform the year-end closing can be found in the next video - Accounting Period Initialization.