I try to import a sales order from an Shopware 6.5 online shop. Because of different tax calculations that lead to rounding errors, the total price of the order can differ by multiple cents.

For odoo itself there is the option with a B2C pricelist: https://www.odoo.com/documentation/17.0/applications/finance/accounting/taxes/B2B_B2C.html

But I create the Odoo 17 sale order via the XML-API with the following data:

{
  "carrier_id": 3,
  "client_order_ref": "13725",
  "company_id": 1,
  "name": "Order 13725",
  "note": "thanks :-)",
  "order_line": [
    [
      0,
      0,
      {
        "product_id": 101,
        "display_name": "Demo Product #1",
        "name": "Demo Product #1",
        "product_uom_qty": 1,
        "price_unit": 1,
        "price_tax": 0.07,
        "tax_id": [
          [
            6,
            0,
            [
              76
            ]
          ]
        ]
      }
    ]
  ],
  "partner_id": 13895
}

How can I use gross prices (taxes included) via API when the sale.order.line field price_total is read-only.