I put a new field in the res.partner model but I want to show it at the point of sale and it doesn't appear between the res.partner fields

class QappsResPartner(models.Model):
    _inherit = 'res.partner'

    tipo_doc = fields.Selection(TIPO_DOC_CLIENTE, string='Tipo Doc.', required=False)

res.partner object at the point of sale

Object

1. partner: Proxy(Object)
1. [[Handler]]: Object
2. [[Target]]: Object
1. address: "4557 De Silva St, 94538, Fremont, Montevideo (UY), Uruguay"
2. barcode: false
3. city: "Fremont"
4. country_id: (2) [234, 'Uruguay']
5. email: "bohemio8407@gmail.com"
6. id: 14
7. lang: "es_ES"
8. mobile: "+5358572287"
9. name: "Pavel Daniel"
10. parent_name: false
11. phone: "(870)-931-0505"
12. property_account_position_id: false
13. property_product_pricelist: (2) [1, 'Tarifa pública (UYU)']
14. state_id: (2) [1412, 'Montevideo (UY)']
15. street: "4557 De Silva St"
16. vat: false
17. write_date: "2023-03-17 22:08:12"
18. zip: "9453

the type_doc field does not appear