Hi Joe,
You could be having a full cache. That’s why you get random errors when creating invoices. Let’s do some steps to fix the error.
First, we’ll block your browser’s cache from saving new data by signing in to QuickBooks using a private window. If you can create invoices without a prompt to call Support, you can go back to your regular browser and clear its cache. If not, please try other browsers to isolate the case.
Please let us know how the steps work for you?
