The Customer Account payment method must be selected in the point of sale payment methods.
Allow POS Payment
* Allows payment using the "Customer Account" method and creates an odoo invoice partial payments.
Allow POS Invoice Payment and Validation
* Allows partial payments of odoo invoices from the point of sale.
Allow Pos All invoices
* When enabled, it will show all invoices (Credit Sales) in general.
* When unchecked, it will only show those invoices (credit sales) that were registered at the given point of sale itself.

There is a new button to list credit sales.

Find list of all odoo invoices (credits)
An option to record partial payments and to reprint partial payment statements.

Record a partial or full payment of the credit sale.

Select the available options (payment methods), enter the payment amount and customize a gloss.

Print a proof of payment with the statement.

Now you can get the detail with the amount due.

You can register the last installment to liquidate the credit.

Reprint the new voucher with the latest status.

Credit accounts that are already settled (with 0 amount due) are no longer listed in POS, you can find in Accounting in paid status.

At the close of the session, the partial payments made are detailed.

In the Accounting module, you can find the odoo invoice summary with the status of partial payments.

The partial payments made at the point of sale are available in Accounting.
NOTE: For the automatic reconciliation process, you must configure "Incoming Payment" in the journal.
This if your database uses the accounting module.