/, you need to properly encode it before appending it to the URL. Otherwise, the browser or server may misinterpret the URL structure (e.g., by treating slashes as path separators).encodeURIComponent() to safely encode the product code:%2F) as part of the path. If the backend decodes the value properly, it will work.https://fake_url.com/api/v1/products?code=ABC%2F123%2FXYZ