vertical-cooperative/easy_my_coop_be/models/coop.py

from odoo import fields, models


class SubscriptionRequest(models.Model):
    _inherit = 'subscription.request'

    company_type = fields.Selection([('scrl', 'SCRL'),
                                     ('asbl', 'ASBL'),
                                     ('sprl', 'SPRL'),
                                     ('sa', 'SA')])

    def get_partner_company_vals(self):
        vals = super(SubscriptionRequest, self).get_partner_company_vals()
        vals['out_inv_comm_algorithm'] = 'random'
        return vals

    def get_partner_vals(self):
        vals = super(SubscriptionRequest, self).get_partner_vals()
        vals['out_inv_comm_type'] = 'bba'
        vals['out_inv_comm_algorithm'] = 'random'
        return vals

    def get_representative_valst(self):
        vals = super(SubscriptionRequest, self).get_representative_vals()
        vals['out_inv_comm_type'] = 'bba'
        vals['out_inv_comm_algorithm'] = 'random'
        return vals