Hello,

I assume that you are talking about replacing a field in sales order lines using a custom module? If that's so, you can try to inherit the sale.order.lines model and later just rename the field.

class CustomSaleOrdeLines(models.Model):
    _inherit = sale.order.line

    product_uom_qty = fields.Float("Ordered Qty Edited")

Best regards,

Altela (altelasoftware.com)