from netforce.model import Model, fields

class ConvSaleInvoice(Model):
    _inherit="conv.sale.invoice"
    _transient=True
    _fields={
        "department_id": fields.Many2One("clinic.department","Department"),
        "track_id": fields.Many2One("account.track.categ","Track1"),
    }
        

ConvSaleInvoice.register()