I accidently deleted an account in the Chart of Accounts (make inactive). How do I put back to the Chart of Accounts?

I'd be happy to assist you today, agatha-priscilli.

Helping you activating an inactive account is quick and easy. Here are the steps to complete the process.

1. On your Chart of Accounts screen, click the Gear icon at the upper right.
2. Select Include inactive.
   
3. Locate the deleted or inactive account, and hit Make active.
   

To help you organise your chart of accounts, you can visit the following article: Delete an account on your chart of accounts in QuickBooks Online. This will provide you links and steps on how to activate and use account numbers as well as creating sub-accounts in QuickBooks Online.

I'll be around to help if you need additional assistance. I'm more than willing to lend you a hand.