old_contents: from odoo import fields, models
  
  
  class SubscriptionRequest(models.Model):
      _inherit = "subscription.request"
  
      company_type = fields.Selection(
          [("scrl", "SCRL"), ("asbl", "ASBL"), ("sprl", "SPRL"), ("sa", "SA")]
      )
  
  
new_contents: from odoo import models
  
  
  class SubscriptionRequest(models.Model):
      _inherit = "subscription.request"
  
      def get_company_type_selection(self):
          return [
              ("scrl", "SCRL"),
              ("asbl", "ASBL"),
              ("sprl", "SPRL"),
              ("sa", "SA"),
          ]
  
subject: Create get_company_type_selection