You can enter it through the deposit feature, Ralva.
It'll help you enter the money or amount into the system. Let me guide you.
Go to Make Deposits.
If the Payments to Deposit window will pop up, you can close it.
Fill in the necessary fields.
Click Save & Close.
If the month has been reconciled already, though, entering a new transaction might create a discrepancy. You'll want to undo the previous reconciliation and re-do it to fix the issue. Before doing the process, ensure to create a backup of your company file to avoid data loss. You can also check these articles to help you: