Two defects for mandatory unlimited entity-reference field

My custom module here to fix these two issue

/**
 * Implementation of hook_form_alter()
 * For mandatory unlimited entity-reference field , the cron module set only the first field to be mandatory
 * Now we use this function to add a validate fucntion to those field.
 * First we set the first field un-required and check in the validate function for all the field
 */
function alu_features_content_type_form_alter(&$form, $form_state, $form_id){
  // Set the entityreference type in field #attributes
  $type = 'field-type-entityreference';
  $boolen = false;
  foreach ($form as $id => $list){
    if (is_array($list)){
      // Not all the field has those filed so we must check
      if (isset($list["#attributes"]["class"]) && !empty($list["#attributes"]["class"])){
        // To check this field type is entityreference or not
        if (in_array($type,$list["#attributes"]["class"])){
          // If this field is required then we add a validate function in $form["actions"]["submit"]
          if ($list["und"]["#required"] && isset($list['und']['add_more'])){
            // Set the first field required to false
            $form[$id]["und"][0]["target_id"]['#required'] = false;
            // Add vaildate function
            $boolen = true;
          }
        }
      }
    }
  }
  // Add vaildate function
  if ($boolen){
    $form["actions"]["submit"]['#validate'][] = 'alu_features_content_type_field_spotlights_validation' ;
  }
}

/**
 * Implementation of hook_form_validation()
 */
function alu_features_content_type_field_spotlights_validation($form, &$form_state){
  // Get the fields from form post
  $field_type = $form_state['field'];
  // To check fields is entityreference or not
  foreach ($field_type as $name => $field){
    // If the type is entityreference and required is ture
    if ($field['und']['field']['type'] == 'entityreference' && $field['und']['instance']['required'] == 1){
      $field_check = $form_state['values'][$name];
      $boolen = false ;
      // Expect the singl line field
      if (isset($field_check['und']['add_more'])){
        foreach ( $field_check as $fields ){
          foreach ($fields as $array => $id){
            if (is_numeric($array)){
              // Check whether or not it is empty or not
              if (isset($id['target_id']) && !empty($id['target_id'])){
                $boolen = true;
              }
            }
          }
        }
        // Sent error messege if the unlimited field is all empty
        if (!$boolen){
          // Use the label for this field instead of using the empty title
          $label = $field['und']['instance']['label'];
          form_error($form[$name],t('%name is required!',array('%name' => $label)));
        }
      }
    }
  }
}