Hi hazi qah We presume that when you state that you owe that customer money this is for something that you have purchased from them? If it is what you will have to do is create what's called a contra journal. You would create the journal with the amount/on both lines debtors and creditors for 15,748.
There are two lines to the journal, on line one you'll select the debtors/accounts receivable (the debtors account relating to the relevant currency) in the account column, in the credits column you'd enter the 15,748 amount, in the name column you'd enter the customers name. On line two in the accounts column enter the creditors/accounts payable account (the creditors account that relates to the relevant currency), in the debits column enter 15,748 and in the name column you'd enter the suppliers name, save and close.
You'd then receive payment on your customers invoice, select the journal and then in the amount received field enter the amount that they actually sent you, 8,498, this will then create a credit on the customers account for 6,,498. When you receive payment on the customers other invoices you can then use the credit/unapplied payment.
As you also owe that customer money, we presume for something you've purchased you will then have to make payment on the bill that you owe the customer/supplier the 15,748 and select the journal/use it as the payment.
We've included an article that explains the above, please note that we're not accountants and we recommend that you qualify the above with an accountant
https://quickbooks.intuit.com/learn-support/en-uk/journal-entries/how-to-enter-contra-payments-in-qu...
