Some invoices couldn't be imported The following invoices failed with the error: "QBDate invalid: 1/2/1"

Good day, usersuchi-w.

I understand that you need to import your invoices to QuickBooks Online. Let me help you!

We need to make sure that the CSV file has the correct figures. You received an error message because of invalid date. Open the file and locate the "1/2/1" so you can correct and edit it. That way, it can be mapped correctly when you import the file.

I've added this article for your reference: Import multiple invoices at once.

I'll be here if you need my help. Wishing you all the best!