Hi,

Steps to Perform Bank Reconciliation in Odoo:

    Access Reconciliation View:

        Go to Accounting Dashboard.

        Click on the Bank Journal name or the Reconcile Items button.

    Review Transactions:

        In the Transactions section (left), select a bank transaction to reconcile.

    Define Counterpart Entries:

        In the Counterpart Entries section (bottom right), choose a method:

            Match Existing Entries: Use pre-selected matches.

            Batch Payments: Reconcile grouped payments.

            Manual Operations: Manually select accounts and amounts.

            Reconciliation Model Buttons: Use custom buttons for frequent operations.

    Balance the Resulting Entry:

        In the Resulting Entry section (top right), ensure the transaction is balanced.

        Add another entry or write off any remaining amount if needed.

    Validate or Mark as To Check:

        Click Validate to confirm reconciliation.

        Use To Check if unsure, and revisit later.

    Repeat for All Transactions:

        Continue matching and validating until all transactions are reconciled.

For more, you can follow the document below:

https://www.odoo.com/documentation/18.0/applications/finance/accounting/bank/reconciliation.html

Hope it helps