vertical-cooperative/easy_my_coop_fr/models/coop.py

from odoo import fields, models


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

    company_type = fields.Selection(
        selection_add=[
            ("asso", "Association"),
            ("eurl", "EURL / Entreprise individuelle"),
            ("sarl", "SARL"),
            ("sa", "SA / SAS"),
        ]
    )

    def get_required_field(self):
        req_fields = super(SubscriptionRequest, self).get_required_field()
        if "iban" in req_fields:
            req_fields.remove("iban")

        return req_fields