It's great to have you here in the Community, @Oklahoma8888.
I'm here to share details of why this can happen and provide steps to assign the correct transaction to your invoices.
This usually occurs if the transaction number was assigned to an invoice that has been deleted from your account.
Please note that QuickBooks assigns transaction numbers in sequence, which means that the following number is automatically set regardless of whether the previous one was voided or deleted. However, we can find the Audit log report to verify if any changes have been made to your account.
Here's how:
Moreover, you can manually correct the inaccurately assigned transaction number in the latest invoice and create a new transaction with the correct ordering.
Furthermore, I've added this article for you to be able to have more insights on how to receive and record invoice payments in QuickBooks Online: Record invoice payments in QuickBooks Online.
Let me know if you still have further queries managing your invoices in QBO. I'm just one post away to assist you. Have a good one.
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