I want to ensure this is taken care of, bmfirstaid.
Beforehand, may I know what you did before receiving the error? Any information and screenshots added will help us resolve the problem.
If you meant creating or saving invoices, we've received similar cases about this issue. I recommend contacting our QuickBooks Support Team to be added to the affected users list and receive email updates on the investigation. Please include investigation number INV-103515 to expedite the process.
Here's how.
Additionally, I've added this link for more guidance on managing invoices: Create invoices.
Once your customer pays their invoice, you can refer to this link to record it in the system: Record invoice payments.
Let me know if you need more help managing your invoices in QuickBooks. It's my pleasure to help you anytime. Take care.
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