You've included the check in the bank deposit

If you deposited the customer check and later voided, the system posts a charge to the bank reconciliation. This shows in the bank reconciliation as a charge with the description Void Payment.

• If it throws off your bank reconciliation, void the charge using the CM, Transactions, Void Bank Transactions

You reprocessed a check, such as an NSF check or posted to the wrong customer 

1. Post the check to the customer account in AR, Transactions, Post Receipts.
2. Deposit the receipt using AR, Transactions, Bank Deposits.

You haven't deposited the check to your bank reconciliation

• Voiding the check in Accounts Receivable before its deposited means it never posted to the bank reconciliation
• Since you didn't include the transaction in the bank reconciliation, there’s nothing to reconcile yet