Hi, 

I try to update prices on quotation with XMLRPC, that work but pdate_prices return an empty response. 

The fault is : 

TypeError: cannot marshal None unless allow_none is enabled"

I use Laminas XMLRPC php packages  : 

return $this->_em->createQueryBuilder()
    ->setMethode('update_prices')
    ->setRessources('sale.order')
    ->setParams([$quotationId])
    ->setBody([
            "context" => [
                "search_default_my_quotation" => $quotationId,
                "allowed_compagny_ids" => [1]
            ],

    ])
    ->getQuery()
    ->getResult();

How can I get true or false response?

Notice we use sass version of Odoo 14