Something went wrong when I copied and pasted the TCPMON output for the concatenateStrings request and response. Here's how it looks (hope this looks right this time!):
concatenateStrings request: POST /SOAPAttachmentsMultipleParametersDemoProjectWeb/services/Multi pleSOAPAttachmentsService HTTP/1.0 Content-Type: multipart/related; type="text/xml"; start="<7E082A9FA4847AD320EEE5EF16FD3703>"; boundary="--- -=_Part_0_637696601.1059752868488" Accept: application/soap+xml, application/dime, multipart/related, text/* User-Agent: Axis/1.2dev Host: 127.0.0.1 Cache-Control: no-cache Pragma: no-cache SOAPAction: "" Content-Length: 977 ------=_Part_0_637696601.1059752868488 Content-Type: text/xml; charset=UTF-8 Content-Transfer-Encoding: binary Content-Id: <7E082A9FA4847AD320EEE5EF16FD3703> <?xml version="1.0" encoding="UTF-8"?> <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <soapenv:Body> <concatenateStrings xmlns=""> <source href="cid:BE1EB543BDEB3822AA993DFB69458264" xmlns=""/> <source href="cid:902EC24FCE3A0B0398A6D949E8578100" xmlns=""/> </concatenateStrings> </soapenv:Body> </soapenv:Envelope> ------=_Part_0_637696601.1059752868488 Content-Type: text/plain Content-Transfer-Encoding: binary Content-Id: <BE1EB543BDEB3822AA993DFB69458264> One ------=_Part_0_637696601.1059752868488 Content-Type: text/plain Content-Transfer-Encoding: binary Content-Id: <902EC24FCE3A0B0398A6D949E8578100> Two ------=_Part_0_637696601.1059752868488-- concatenateStrings response: HTTP/1.1 500 Internal Server Error Server: WebSphere Application Server/4.0 Content-Type: text/xml; charset=utf-8 Content-Language: en Connection: close <?xml version="1.0" encoding="UTF-8"?> <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <soapenv:Body> <soapenv:Fault> <faultcode>Server.userException</faultcode> <faultstring>No such operation 'concatenateStrings'</faultstring> <detail/> </soapenv:Fault> </soapenv:Body> </soapenv:Envelope>