In The Order Exchange Application go to Accounting System Settings. Select the Accounting System “Quickbooks Online” through the drop down.
Select “Authorise” (Quick books online is accessed visa cloud)
Enter the quick books online email and password
Select the authentication channel and continue.
Enter the authentication code received.
Select the sandbox (Sandbox Company_AU_2)
Now select Connect.
This will connect The Order Exchange system to the Quick Books Online Accounting System.