@api.model

def action_purchase_order(self):

    rec= self.env['purchase.order'].create({

        'partner_id' : self.vendors.id,

        'store_id' : self.store_id.id,

        'purchase_order_type' : self.order_type.id,

        'date_order' : self.date_order.id,

        'product_id' : self.product_id.id,

        'date_planned' : self.date_order.id,

        'product_qty' : self.name.id,

        'brand_id' : self.brand_id.id,

        'product_id' : self.product_id.id,

        'part_number': self.part_number.id,

        'date_planned' : self.date_order.id,

        'product_qty' : self.quantity_no.id,

    })

    return rec

pls identify the mistake!!!!!