Can I void a deposit and redo it, if the bank account is linked?

It's great to see you in the Community space. I'll be glad to lend a hand in voiding your deposit in QuickBooks Online, Jessica. 

If you've made a mistake creating a deposit in QuickBooks Online and need to fix it, you have a few options. While some transactions can be voided, deposits cannot be directly voided in QuickBooks Online at the moment. However, you can delete the incorrect deposit and then recreate it with the correct information.

Here's how:

1. Go to Sales.
2. Select All sales.
3. Look for your deposit that you want to void.
4. In the Action column, click the dropdown, then select Delete.

See this article for more details: Void or delete transactions in QuickBooks Online

Additionally, I've got you these handy articles about how you can reconcile an account and fix a reconciliation in QuickBooks Online:

• Reconcile an account in QuickBooks Online.
• Fix issues the first time you reconcile an account in QuickBooks Online.

You can always get back to me here if you have any other questions about your deposits. I'll be around to lend a hand.