Please help. My client accidentally just submitted a bank transfer to invoice mistakenly for the entire invoice. She doesn't have funds to support. Can I quickly cancel?

I understand the urgency of your situation. Since your client has mistakenly submitted a bank transfer for the entire invoice amount and needs to stop the transfer, turnerdesigninfo. If the bank transfer fails due to insufficient funds, I'll guide you on how to handle this to keep your books accurate. 

Find the transfer that was declined and take note of the payment details. Next, create a service item for the failed bank transfer. After that, create an invoice. Enter the customer whose payment was rejected. Add the Rejected bank transfer item you created to the invoice.

After completing the steps mentioned earlier, we can proceed to take out the payment from the original invoice.

Here's how: 

1. Go to Sales, then select Invoices. 
2. Choose the invoice that has the rejected bank transfer payment, then select Edit invoice, or select Edit next to the rejected bank transfer payment.  
3. Select Payment.
4. Uncheck the box beside the rejected bank transfer payment.
5. Click Save and close, then Save as a credit. 
6. Press Yes.

Then, we can move the payment to the new invoice. Perform the steps below: 

Here's how:

1. From the Sales page, select Invoices.
2. Go to the invoice you created in Step 3, then click Receive payment.
3. Check the box beside the rejected bank transfer payment to link it.
4. Click Save and New.
5. Choose the invoice again, then hit Delete from the More Actions dropdown menu.

Subsequently, we can generate an expense and link the payment to the new expense.

Furthermore, if you've followed the steps mentioned and are still facing the same issue, I suggest contacting our support team. They have the necessary tools to pinpoint and resolve the underlying issue while maintaining the security of your information.

Additionally, you can take a look at this page for your reference: Fix a rejected bank transfer payment in QuickBooks Online.

If you need help pulling up your sales report in QuickBooks Online, we are here to provide more information. Have a fantastic day ahead, turnerdesigninfo.