Thank you, I have tested self.env['res.company'].copy (I dont have cr/uid) it looks like I got a copy but not any company-object nor company_id returned. def add_activity(self): template_user = self.env['res.users'].browse(literal_eval(self.env['ir.config_parameter'].get_param('auth_signup.template_user_id', 'False')),) assert template_user and template_user.exists(), 'Signup: invalid template user' for user in self: if user.company_id.id == template_user.company_id.id: company_id = self.env['res.company'].copy(template_user.company_id.id,default={ 'name': _('%s Activity') % user.name, 'currency_id': template_user.company_id.currency_id.id, 'country_id': template_user.company_id.country_id.id, 'parent_id': template_user.company_id.parent_id.id,}) _logger.warning("res.user company %s" % (company_id)) user.write({'company_ids': (6,_,[company_id,template_user.parent_id.id]),'company_id': company_id})