если вызываете через компонент, то в параметре SUCCESS_URL адрес страницы, например /form/finished.php
[CODE]
<?$APPLICATION->IncludeComponent(
"bitrix:form.result.new",
"",
Array(
"SEF_MODE" => "Y",
"WEB_FORM_ID" => "1",
"LIST_URL" => "",
"EDIT_URL" => "",
"SUCCESS_URL" => "/form/finished.php",
"CHAIN_ITEM_TEXT" => "",
"CHAIN_ITEM_LINK" => "",
"IGNORE_CUSTOM_TEMPLATE" => "N",
"USE_EXTENDED_ERRORS" => "N",
"CACHE_TYPE" => "A",
"CACHE_TIME" => "3600",
"SEF_FOLDER" => "/",
"VARIABLE_ALIASES" => Array(
)
),
false
);?>
[/CODE]