Gambio v2 order/status aktualisieren

Irgendwie steht die Doku mit mir auf Kriegsfuß:

Das setzen des Bestellstatus wird mit folgender Fehlermeldung beendet:

Code:

{ "code": 400, "status": "error", "message": "Order data were not provided.", "request": { "method": "PATCH", "url": "www.webshop.com", "path": "/api.php/v2/orders/401234/status", "uri": { "root": "https://www.webshop.com/api.php/v2/", "resource": "/api.php/v2/orders/401234/status" } } }

Code zum setzen:

Code:

    $et_info = "TEST";
     $et_custinfo = 'false';
     $et_dat = date("Y-m-d H:i:s");
     $creat_statid = '2';
     $data_bestatus = '[
        {
        "comment": "'.$et_info.'",
        "customerNotified": "'.$et_custinfo.'",
        "dateAdded": '.$et_dat.',
        "statusId": "'.$creat_statid.'"
        }
     ]';
   
     $curinit = curl_init("https://www.webshop.com/api.php/v2/orders/401234/status");
     curl_setopt($curinit, CURLOPT_RETURNTRANSFER, true);
     curl_setopt($curinit, CURLOPT_ENCODING , "");
     curl_setopt($curinit, CURLOPT_CUSTOMREQUEST, "PATCH");
     curl_setopt($curinit, CURLOPT_POSTFIELDS, $data_bestatus);
     curl_setopt($curinit, CURLOPT_HTTPHEADER, array(
            'Content-Type: application/json',
            'Authorization: Basic AUTHCODE'
          ));
     $json = curl_exec($curinit);
     curl_close($curinit); 

Eventuell hat hier jemand den entscheidenen Tipp?