DeliveryService::prepareIncomingConfig

static function prepareIncomingConfig(array $config, array $params): array
{
	$result = [
		'MAIN' => [
			'REST_CODE' => $params['REST_CODE']
		],
	];

	foreach ($config as $configItem)
	{
		$result['MAIN'][$configItem['CODE']] = $configItem['VALUE'];
	}

	return $result;
}