Symfony annotation error on custom field - annotations

Question

I'm new bie to Symfony 3, I couldn't find a favorable solution online. Therefore I'm raising this question.
My Entity Class as follows:
// src/AppBundle/Entity/TimeTable.php
namespace AppBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
/**
* #ORM\Entity
* #ORM\Table(name="time_table")
* #ORM\Entity(repositoryClass="AppBundle\Repository\TimeTableRepository")
* #UniqueEntity(fields={"dateid","trend"}, message="Duplicate Entry")
*/
class TimeTable
{
/**
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #ORM\dateid
* #ORM\Column(type="integer")
* #Assert\NotBlank()
*/
private $dateid;
/**
* #ORM\trend
* #ORM\Column(type="integer")
* #Assert\NotBlank()
*/
private $trend;
/**
* #ORM\mmpy
* #ORM\Column(type="decimal")
* #Assert\NotBlank()
*/
private $mmpy;
public function getDateid()
{
return $this->dateid;
}
public function setDateid($dateid)
{
$this->date = $dateid;
}
public function getTrend()
{
return $this->trend;
}
public function setTrend($trend)
{
$this->trend = $trend;
}
public function getMmpy()
{
return $this->mmpy;
}
public function setMmpy($mmpy)
{
$this->mmpy = $mmpy;
}
}
and When I run the following command : php bin/console doctrine:schema:validate
it throws me following error:
[Semantical Error] The annotation "#Doctrine\ORM\Mapping\dateid" in property AppBundle\Entity\TimeTable::$dateid do
es not exist, or could not be auto-loaded.
Any idea how what cause the issue and how to overcome it?
FYI: I'm using Symfony 3.2
,Many thanks

Answer 1

Because it is not a valid Doctrine annotation
You also, have
trend
mmpy
They don't appear as valid as well. Where did you get those from. Maybe an old article?