Hi Nanci,
I understand the importance of sending your invoices successfully to your QuickBooks Online (QBO) account. Let me direct you to the appropriate support team that can assist you with this error.
Since this error originates within your integrated application when attempting to send invoices, I recommend contacting the support team of the third-party app. They have the necessary tools to securely review your account and determine why you're encountering this kind of error. They can also advise you on the next steps to resolve this issue.
If you have any other QBO-related questions, ideas, or concerns, I’m just a reply away. Your success means everything to us, and I’m here to help in any way that I can. I’m looking forward to hearing back and continuing to support you!
