I am trying to add the cash rounding line via API and wonder whether it is possible. I have created the invoice and define the cash rounding method but it will not add the cash rounding line as invoice_line is added later. I wonder whether there is a method to trigger the cash rounding like compute_tax. Below is the code I use, for testing purpose i have include adding invoice_line as part of the code.

@app.route("/create_invoice")

def create_invoice():

    date_invoice = request.args.get("date_invoice")

    invoice_id = models.execute_kw(db, uid, password, 'account.invoice', 'create', [{

    'date_invoice':date_invoice,

    'type': 'out_invoice',

    'partner_id': 92,

    'account_id': 38,

    'cash_rounding_id': 1,

    }])

    product_id = request.args.get("product_id")

    name = request.args.get("name")

    quantity = request.args.get("quantity")

    price_unit = request.args.get("price_unit")

    account_id = request.args.get("account_id")

    invoice_line_id = models.execute_kw(db, uid, password, 'account.invoice.line', 'create', [{

    'invoice_id': invoice_id,

    'product_id': product_id,

    'name': name,

    'quantity': quantity,

    'price_unit': price_unit,

    'account_id': account_id,

    'invoice_line_tax_ids':  [ (4,6) ],

    }])

    invoice_tax_id = models.execute_kw(db, uid, password, 'account.invoice', 'compute_taxes', [(invoice_id)])

    return jsonify(invoice_id)