Ok let move with a simple example :

whenever you create an invoice(think for Supplier) and validate it, then a two Journal Entry created automatically and with two journal entry lines ... this entry line is Journal Items only. and it is like this : (Purchase Journal) 1. payable account ------------credit ---------------100 2. Expense account ------------debit ----------------100

Now when you pay that invoice either bank/cash or others then again a journal entry created with two more Journal entries line ........mean two more Journal Items (Bank Journal) 3. Bank Account ---------------credit-------------100 4. payable account ------------debit --------------100

So finally payable account become '0' means reconciled and only bank and expense account has real figure of amount.

Hope it will help . If yes then thanks will be enough !!!:D