Solution: To correct this: Log in to QuickBooks and click the "Gear" in the upper right hand corner. Under "Company Settings", click “Expenses” and enable the option: “Make expenses and items billable”.
If you have "in multiple accounts" selected (you can access this screen by clicking on the pencil icon on the right):
You will also need to check the billable option and select an income account with in your chart of accounts. You can find this under Chart of Accounts > arrow on the right of the account you need to edit > Edit.
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