“wpcfe_invoice_barcode_info” action hooks that allow to add additional information in the invoice template barcode information section.

Note: This is available only in the Frontend Manager addon plugin.
Copy and paste this code to the theme functions.php file for sample code.
// In this sample code it will add address to the barcode information.
function my_custom_data(){
?>
<p>Serial #: 1234567890</p>
<?php
}
add_action('wpcfe_invoice_barcode_info', 'my_custom_data');