Hello there, @Johnolly2.
It seems that you've replied to the same concern twice, and my colleague has already added a response. If you haven't been notified of the new reply, here's the link: https://quickbooks.intuit.com/learn-support/en-us/employees-and-payroll/re-error-code-3100/01/143105...
Feel free to leave a comment if you need more help with QuickBooks. The Community team always has your back.
