question

What docs are you referring to? https://docs.clover.com/docs/using-oauth-20? Please take a look at the asking a question seciton on our Community Guidelines (https://community.clover.com/page/community-guidelines), you haven't provided enough information for us to help you.

I was having the issue with not being able to receive the Webhook Verification Code.

From developer dashboard, in the app I am creating, I setup the webhook url and when I clicked on "Send verification code" I could tell it was hitting my server, but the POST and REQUEST data were both empty.

It turns out that Clover will send a hit your server, and you need to return a 200 code first, and then it will send the data after.

So in php, I did this...

<?php
    header(trim("HTTP/1.1 200 SUCCESS"));
    $content = json_decode(file_get_contents('php://input'),true);
    mail( "youremail@yourdomain.com", "TEST my clover webhook", print_r($content, 1) );
    // NOTE: You can store $content in a file or database, but here I am just sending myself a email for testing purposes as it is quick and easy.
?>