NoFieldItemsExistWithHigherCardinality.php

<?php

declare (strict_types=1);
namespace Drupal\field\Plugin\Validation\Constraint;

use Drupal\Core\StringTranslation\TranslatableMarkup;
use Symfony\Component\Validator\Constraint as SymfonyConstraint;
use Drupal\Core\Validation\Attribute\Constraint;

/**
 * Checks if field items exist that exceed the allowed cardinality.
 */
class NoFieldItemsExistWithHigherCardinality extends SymfonyConstraint {
  public function __construct(public string $entityType, public string $fieldName, public string $message = "The field '@field_name' of entity type '@entity_type' has more entries (@max_delta) than the cardinality (@cardinality) allows.", ?array $groups = NULL, mixed $payload = NULL) {
    parent::__construct(groups: $groups, payload: $payload);
  }

}