How to change WPCargo API WooCommerce Order Tracking number
To change the plugin shipment number is possible using the filter hooks
Copy and paste this sample code to your theme functions.php file
// Filter Shipment number
/*
* Adding prefix "SITEA-" to the shipment number
*
*/
add_filter( 'wpcwp2p_generate_shipment_number', function( $shipment_number ){
return 'SITEA-'.$shipment_number;
});