Working Retrieve.php Page

<!DOCTYPE html>
<html>
<head>
    <title>Insert data in MySQL database using Ajax</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<div id="targetLegit2"> </div>
<script>
$(document).ready(function() {
$('#butLoad').on('click', function() {
let identification = $('#identification').val();

    $.ajax({
        url:  "save.php",
        type: "POST",
        data: {
            identification: identification
        },
        cache: false,
        success: function(dataResult){
            dataResult = JSON.parse(dataResult);
            if(dataResult.statusCode==200){
                $('#targetLegit2').load('showDescription.php', {identification: identification});
            }
            else if(dataResult.statusCode==201){
                alert("Error occured !");
            }


    }

    });
});
 });
</script>
<?php
    error_reporting(E_ALL);
    ini_set('display_errors', 1);
                echo <<<EOT
        <div class="form-group">
            <label for="id">Identification #:</label>
            <input type="number" class="form-control" id="identification" placeholder="id" name="identification">
        </div>
        <input type="button" name="load" class="btn btn-primary btn-lg" value="Load From Database" id="butLoad">
        EOT;
?>
</html>