old_contents: # -*- coding: utf-8 -*-
  
  from openerp import fields, models
  from openerp.tools.safe_eval import safe_eval
  
  
  class res_config(models.TransientModel):
      _inherit = 'base.config.settings'
  
      allow_cnpj_multi_ie = fields.Boolean(
          string=u'Permitir o cadastro de Customers com CNPJs iguais',
          default=True,
      )
  
      def get_default_allow_cnpj_multi_ie(self, cr, uid, fields, context=None):
          icp = self.pool.get('ir.config_parameter')
          return {
              'allow_cnpj_multi_ie': safe_eval(icp.get_param(
                  cr, uid, 'l10n_br_base_allow_cnpj_multi_ie', 'False')),
          }
  
      def set_allow_cnpj_multi_ie(self, cr, uid, ids, context=None):
          config = self.browse(cr, uid, ids[0], context=context)
          icp = self.pool.get('ir.config_parameter')
          icp.set_param(cr, uid, 'l10n_br_base_allow_cnpj_multi_ie',
                        repr(config.allow_cnpj_multi_ie))
  
new_contents: # -*- coding: utf-8 -*-
  
  from openerp import fields, models
  from openerp.tools.safe_eval import safe_eval
  
  
  class res_config(models.TransientModel):
      _inherit = 'base.config.settings'
  
      allow_cnpj_multi_ie = fields.Boolean(
          string=u'Permitir o cadastro de Customers com CNPJs iguais',
          default=False,
      )
  
      def get_default_allow_cnpj_multi_ie(self, cr, uid, fields, context=None):
          icp = self.pool.get('ir.config_parameter')
          return {
              'allow_cnpj_multi_ie': safe_eval(icp.get_param(
                  cr, uid, 'l10n_br_base_allow_cnpj_multi_ie', 'False')),
          }
  
      def set_allow_cnpj_multi_ie(self, cr, uid, ids, context=None):
          config = self.browse(cr, uid, ids[0], context=context)
          icp = self.pool.get('ir.config_parameter')
          icp.set_param(cr, uid, 'l10n_br_base_allow_cnpj_multi_ie',
                        repr(config.allow_cnpj_multi_ie))
  
subject: set default false allow_cnpj_multi_ie