Thanks for reaching out, Sunita.
I see that you want to allocate your payment to the correct GST quarter. It synced in October, despite being paid in August. I need to ask a few questions for us to determine the best way to fix this.
Is this transaction a Bill Payment to a supplier, a Customer Payment for an invoice, or an Expense added directly from your Bank transactions?
Also, what is the Date listed on the original Bill or Invoice in QuickBooks, and does the Payment date currently show as August or October?
If you're on a Cash basis, QuickBooks reports GST based on the payment date, so payments made in October fall into the Oct-Dec quarter. Conversely, if you're on an Accrual basis, it reports GST based on the bill or invoice date.
We'll be glad to offer assistance tailored to your needs. Looking forward to hearing back from you.