Warehouse - Items - Default GL Accounts - Tab on Inventory Item
Set up an account. Check the items in the folder - they should all be with the same account.
After changing the account in the item, in the new documents the parameters are applied automatically. But if any operations have already been performed with this item before the account was changed, documents were formed, then in each such document it is necessary to re-select the item so that it is reflected with a new account.
