Issue with SMS integration; Error Code:E612
<p>I tried the below code for SMS integration in my website, but returns error: "Invalid Template Match".
How can I solve this?</p>

<pre><code>$json = json_decode(file_get_contents('sms.kappian.com/api/v3/index.php?method=sms&amp;api_key=APIKEYGOESHERE&amp;to=NUMBERHERE&amp;sender=USER&amp;message=testing&amp;format=json&amp;custom=1,2&amp;flash=0') , true);
</code></pre>

<p>Any help would be appreciated.</p>