Ok i tried without Fault message Mapping and without "Do Not Use Soap Envelope" and in this case i see the first tag of <detail> fault message in my Payload SXMB_Mony.
SoapUI response :
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Header/>
<soapenv:Body>
<soapenv:Fault>
<faultcode>soapenv:Server</faultcode>
<faultstring>FSB-Development--9200</faultstring>
<detail>
<FSBMessageID>00c072e3-f991-48cf-bf31-094dbac9c1b0</FSBMessageID>
<CMessageID/>
<error>Error</error>
</detail>
</soapenv:Fault>
</soapenv:Body>
</soapenv:Envelope>
SXMB_MONI Payload :
<FSBMessageID>00c072e3-f991-48cf-bf31-094dbac9c1b0</FSBMessageID>