Can I void a check that was coded to suspense account and reconciled? The previous bookkeeper cut a check and apply the check to suspense account and reconcile in bank.

Yes, you can make changes after reconciling the bank, Cora2.

Though, let's keep in mind that editing or voiding a transaction can affect the account since we're changing the ending balance. Having said that, it will also affect the beginning balance of your next reconciliation. 

Let's review the reconciliation report. This will help us if we have issues when reconciling.

If the check is reconciled by accident or it's an error, you can unreconcile, and void it. Here's how:

1. Open the check.
2. Click More.
3. Select Void.
4. Click Yes to confirm. 

Although, if an adjustment is created, or you need to start over, I'd suggest reaching out to your accountant. This way, your accounts will not be imbalanced. 

Let me also share the reference on how to reconcile an Account in QuickBooks Online. This will provide you an accurate guide on how to reconcile the account to match your bank or credit card statement. 

If any questions arise, please don't hesitate to drop a comment below. We're here to help you with your reconciliation concern.