You want to create a new Menu that displays records from the account.partial.reconcile model, with custom fields added to pull additional information.

An example:

Here you can see

• INV/2025/00001 was paid with two payments of $500 each
• INV/2025/00003 was partially paid with a payment of $200
• INV/2025/00004 and INV/2025/00005 were paid with the same $1,200 payment
• INV/2025/00006 was paid with a payment of $10,000 that has an unapplied balance

This approach leverages several additional custom fields:

With XML like this:

<list create="0">
    <field name="x_type" column_invisible="1"/>
    <field name="debit_move_id" string="Invoice Number"/>
    <field name="x_partner" string="Customer"/>
    <field name="x_date" string="Invoice Date"/>
    <field name="x_total" widget="monetary" 
                 options="{'currency_field': 'debit_currency_id'}"/>
    <field name="debit_currency_id" column_invisible="1"/>
    <field name="x_status_in_payment" string="Status" widget="badge" 
           decoration-info="x_status_in_payment == 'draft'" 
           decoration-danger="x_status_in_payment == 'cancel'" 
           decoration-muted="x_status_in_payment in ('posted', 'sent', 'partial')" 
           decoration-success="x_status_in_payment in ('in_payment', 'paid', 'reversed')"/>
    <field name="x_payment"/>
    <field name="max_date" string="Date"/>
    <field name="x_payment_amount" />
    <field name="credit_amount_currency" string="Applied"/>
    <field name="credit_currency_id" column_invisible="1"/>
</list>

The Window Action would need to filter for just Customer related payments, since we use this same model for Vendor Payments:

Your Odoo Digital Advisor or Odoo Partner can help you if you don't have the technical skills to make these modifications to your database.