i have a object called relay.point that inherit from logistic.entity and also inherits from stock.warehouse, about what i understood from delegation inheritance when i create my relay.point object must create a stock.warehouse also but i have error said :

ERROR: null value in column "warehouse_id" violates not-null constraint

my code :

class RelayPoint(models.Model):
    _name = 'relay.point'
    _inherit = ['logistic.entity', 'mail.thread', 'mail.activity.mixin']
    _inherits = {'stock.warehouse': 'warehouse_id'}
    _description = 'Relay Point'

    warehouse_id = fields.Many2one('stock.warehouse', string='Related Warehouse',
                                   ondelete='restrict', required=True, auto_join=True,
                                   help='Warehouse-related data of the Relay point')

class LogisticEntity(models.Model):
    _name = 'logistic.entity'
    _description = 'Logistic Entity'

    name = fields.Char(string='Name', required=True)
    code_le = fields.Char(string='Code', required=False)
  warehouse_id = fields.Many2one('stock.warehouse', string='Warehouse', required=False)
  partner_id = fields.Many2one('res.partner', string='Partner', required=True)