Hi guavaria!

Thanks for the additional info. You'll encounter such an error message if the account you're trying to use is marked inactive. You'll want to reactive it so we can fix this.

You can follow these steps:

1. From the Accounting menu, select Chart of Accounts.
2. Click the Gear icon and tick the Include inactive box.
3. Locate the inactive account. Click the Make Active option under the Action button.

I've added some articles for your reference. These will show you how to handle expense transactions in QuickBooks Online.

• Enter and manage expenses in QuickBooks Online
• How to remove a billable expense charge

Keep on posting here if you need more help. Take care!