$products = new Product('replicated');
    $result = $products->getBackorderedOrderItems2($warehouse_id);
} elseif (isset($_POST['form']) && $_POST['form'] == "get_iat_problems") {
    require_once APPLICATION_PATH . MODEL_DIR . '/Product.php';
    $products = new Product('replicated');
    $result = $products->getItemsWithMultipleIAT();
} elseif (isset($_POST['form']) && $_POST['form'] == "get_missing_isc") {
    require_once APPLICATION_PATH . MODEL_DIR . '/Product.php';
    $products = new Product('replicated');
    $result = $products->getMissingItemShipmentClasses();
} elseif (isset($_POST['form']) && $_POST['form'] == "replacement_item") {
    require_once APPLICATION_PATH . MODEL_DIR . '/Product.php';
    $result = "";
    $item_sku = $_POST['item_sku'];
    $products = new Product('replicated');
    $result = $products->findOriginalForReplacement($item_sku);
    if ($item_sku == 'US-53031-02') {
        $result = $products->getSpecialCase($item_sku);
    }
    if (!count($result)) {
        $item_detail = $products->get_item_bySKU($item_sku);
        $replacement_sku = $item_detail[0]['redirect_sku'];
        $result = $products->findOriginalForReplacement($replacement_sku);
        $result[0]['NEW_SKU'] = true;
    }
} else {
    $result = array("J_Error" => $_REQUEST);
    $code = 404;
}
header('Content-Type: application/json');
echo json_encode(array("code" => $code, "result" => $result));