I'm used to writing PHP code for a SOAP call
and this is my code

```
<?php
    $client = new SoapClient("http://www.fma.fr/webservices_comparateurs/tarification_sante_comparateurs.asmx?wsdl");
   $param = array('NomUtilisateur' => 'XXXXXX','MotDePasse' => 'XXYYZZ','ContenuDuMessage' => '');
   $values = $client->TariferSante($param);

    var_dump($values);

?>

```

when i execute the script I get an authentification error message:
------------------------------------------------------------------

> 
> object(stdClass)#2 (1) { ["TariferSanteResult"]=> string(109)
>  "err\_authentification" }
> 
> 
> 

the used parameters are true, you can try with this link:
<http://www.fma.fr/webservices_comparateurs/tarification_sante_comparateurs.asmx?op=TariferSante>