Ali,
XML sounds to be wrong. If you correct it then it'd be something like:

oWS = Createobject("MSSOAP.SoapClient30")
oWS.MSSoapInit("http://43000210000:43000210000@test.sgk.gov.tr/saglikws/services/ProvizyonIslemleri/wsdl/ProvizyonIslemleri.wsdl")
ows.ConnectorProperty("AuthUser")="43000210000"
ows.ConnectorProperty("AuthPassword")="43000210000"

TEXT TO m.lcXML noshow
<provizyonGiris>
<devredilenKurum>3</devredilenKurum>
<hastaKarneNo>111111216</hastaKarneNo>
<hastaSosyalGuvNo>1111111111126</hastaSosyalGuvNo>
<hastaTCKimlikNo>49000719000</hastaTCKimlikNo>
<provizyonTarihi>22.12.2006</provizyonTarihi>
<provizyonTipi>N</provizyonTipi>
<saglikTesisKodu>10662</saglikTesisKodu>
<sigortaliTuru>u>2</sigortaliTuru>
<takipNo></takipNo>
<takipTuru>1</takipTuru>
<yakinlikKodu></yakinlikKodu>
</provizyonGiris>
ENDTEXT
leResult = oWS.hastaKabul(m.lcXml)

Cetin

>I tried so many different configuration, but I couldn't obtain return object from a webservice.
>
>WebService address is :
>http://43000210000:43000210000@test.sgk.gov.tr/saglikws/services/ProvizyonIs
>lemleri/wsdl/ProvizyonIslemleri.wsdl
>
>43000210000:43000210000 are username and password.
>
>I need to call HastaKabul method.
>
>Input parameter of this method as SOAP message is:
>
>

><?xml version="1.0" encoding="utf-8"?>
>
><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
>xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>xmlns:xsd="http://www.w3.org/2001/XMLSchema"
>xmlns:enc="http://schemas.xmlsoap.org/soap/encoding" >
>
><soap:Body>
>
><impl:hastaKabul xmlns:impl="http://servisler.ws.gss.sgk.gov.tr">
>
><provizyonGiris>
>
><devredilenKurum>3</devredilenKurum><hastaKarneNo>111111216</hastaKarneNo><h
>astaSosyalGuvNo>1111111111126</hastaSosyalGuvNo><hastaTCKimlikNo>4900071
>astaSosyalGuvNo>9000
></hastaTCKimlikNo><provizyonTarihi>22.12.2006</provizyonTarihi><provizyonTip
>i>N</provizyonTipi><saglikTesisKodu>10662</saglikTesisKodu><sigortaliTur
>i>u>2<
>/sigortaliTuru><takipNo></takipNo><takipTuru>1</takipTuru><yakinlikKodu></ya
>kinlikKodu>
>
></provizyonGiris>
>
></impl:hastaKabul>
>
></soap:Body>
>
></soap:Envelope>
>

>
>I obtain this SOAP message by using StrikeIron Web Services Analyzer. With this analyzer, I can call the WS easly.
>
>How should I call this method?
>
>
>lcXml = ??
>

>LOCAL loProvizyonIslemleri AS "XML Web Service"
>LOCAL loException, lcErrorMsg, loWSHandler TRY
>        loWSHandler =
>NEWOBJECT("WSHandler",IIF(VERSION(2)=0,"",HOME()+"FFC\")+"_ws3client.vcx")
>        loProvizyonIslemleri =
>loWSHandler.SetupClient("http://43000210000:43000210000@test.sgk.gov.tr/sagl
>ikws/services/ProvizyonIslemleri/wsdl/ProvizyonIslemleri.wsdl",
>"ProvizyonIslemleriService", "ProvizyonIslemleri")
>
>        leResult = loProvizyonIslemleri.hastaKabul(lcXml)
>
>CATCH TO loException
>        lcErrorMsg="Error: "+TRANSFORM(loException.Errorno)+" - "+loException.Message
>        DO CASE
>        CASE VARTYPE(loProvizyonIslemleri)#"O"
>               * Handle SOAP error connecting to web service
>        CASE !EMPTY(loProvizyonIslemleri.FaultCode)
>               * Handle SOAP error calling method
>               lcErrorMsg=lcErrorMsg+CHR(13)+loProvizyonIslemleri.Detail
>        OTHERWISE
>               * Handle other error
>        ENDCASE
>        * Use for debugging purposes
>        MESSAGEBOX(lcErrorMsg)
>FINALLY
>ENDTRY
>