entityerror.php

См. документацию.

<?
 
namespace Bitrix\UI\EntitySelector;
 
class EntityError extends \Bitrix\Main\Error
{
    protected string $entityId;
 
    public function __construct(string $entityId, ...$args)
    {
        $this->entityId = $entityId;
 
        parent::__construct(...$args);
    }
 
    public function getEntityId(): string
    {
        return $this->entityId;
    }
 
    public function jsonSerialize(): array
    {
        return [
            'message' => $this->getMessage(),
            'code' => $this->getCode(),
            'entityId' => $this->getEntityId(),
            'customData' => $this->getCustomData(),
        ];
    }
}