I just want to save an invoice and create a new one and I keep getting Something's not quite right Unexpected problem : -1 I can't get my job done because of this HELP

Thanks for posting in the Community, @jon42.

We received reports regarding users unable to save invoices in QuickBooks Online (QBO). A ticket (INV-42423) has been created and forwarded to our Product Engineers. They're now working to fix this as soon as possible.

In the meantime, I suggest contacting our Suppor team so they can add your details to our notification list. This will help our Engineers determine the number of affected users. An email notification will be sent to you once this has been resolved. I'll also inform you here when we get the update as well.

Here's how to reach them:

1. In QBO, click the Help (question mark) icon at the top right.
2. Select Contact Us at the bottom to connect with our live support.

Just in case, I'll add this article for future reference: Create invoices in QuickBooks Online.

I want to make sure everything is taken care of for you, so please let me know if you have any other issues or concerns. I'm always here to help. Have a good one!