service.php

См. документацию.

<?php
 
namespace Bitrix\Catalog\Controller\Product;
 
use Bitrix\Catalog\ProductTable;
 
final class Service extends Base
{
    protected const TYPE = ProductTable::TYPE_SERVICE;
 
    protected function getAllowedProductTypes(): array
    {
        return [ProductTable::TYPE_SERVICE];
    }
 
    protected function prepareFieldsForAdd(array $fields): ?array
    {
        $fields = parent::prepareFieldsForAdd($fields);
        if ($fields === null)
        {
            return null;
        }
 
        $fields['TYPE'] = ProductTable::TYPE_SERVICE;
 
        return $fields;
    }
}