External SOAP-Call ends with general error "PART UNKNOWN (NULL)"

Question

Hi,
we generated a consumer proxy using the following WSDL file:
<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions targetNamespace="https://soap.global-esign.com/axis/services/GlobalEsignSoapExt" xmlns:apachesoap="http://xml.apache.org/xml-soap" xmlns:impl="https://soap.global-esign.com/axis/services/GlobalEsignSoapExt" xmlns:intf="https://soap.global-esign.com/axis/services/GlobalEsignSoapExt" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:tns1="https://soap.global-esign.com/xsd" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:wsdlsoap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<!--WSDL created by Apache Axis version: 1.3
Built on Oct 05, 2005 (05:23:37 EDT)-->
   <wsdl:message name="CreatePdfSignatureRequest">
      <wsdl:part name="in0" type="xsd:string"/>
      <wsdl:part name="in1" type="xsd:string"/>
      <wsdl:part name="in2" type="xsd:base64Binary"/>
      <wsdl:part name="in3" type="xsd:string"/>
      <wsdl:part name="in4" type="xsd:boolean"/>
      <wsdl:part name="in5" type="xsd:string"/>
      <wsdl:part name="in6" type="xsd:string"/>
   </wsdl:message>
   <wsdl:message name="CreatePdfSignatureResponse">
      <wsdl:part name="CreatePdfSignatureReturn" type="xsd:base64Binary"/>
   </wsdl:message>
   <wsdl:portType name="GlobalEsignSoapExt">
      <wsdl:operation name="CreatePdfSignature" parameterOrder="in0 in1 in2 in3 in4 in5 in6">
         <wsdl:input message="impl:CreatePdfSignatureRequest" name="CreatePdfSignatureRequest"/>
         <wsdl:output message="impl:CreatePdfSignatureResponse" name="CreatePdfSignatureResponse"/>
      </wsdl:operation>
   </wsdl:portType>
   <wsdl:binding name="GlobalEsignSoapExtSoapBinding" type="impl:GlobalEsignSoapExt">
      <wsdlsoap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
      <wsdl:operation name="CreatePdfSignature">
         <wsdlsoap:operation soapAction=""/>
         <wsdl:input name="CreatePdfSignatureRequest">
            <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://GlobalEsign.tsi.de" use="encoded"/>
         </wsdl:input>
         <wsdl:output name="CreatePdfSignatureResponse">
            <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="https://soap.global-esign.com/axis/services/GlobalEsignSoapExt" use="encoded"/>
         </wsdl:output>
      </wsdl:operation>
   </wsdl:binding>
   <wsdl:service name="GlobalEsignSoapExtService">
      <wsdl:port binding="impl:GlobalEsignSoapExtSoapBinding" name="GlobalEsignSoapExt">
         <wsdlsoap:address location="https://soap.global-esign.com/axis/services/GlobalEsignSoapExt"/>
      </wsdl:port>
   </wsdl:service>
</wsdl:definitions>
The coding of the test program is:
*& Report  Z_SOAP_PDF_SIGNATUR
REPORT  z_soap_pdf_signatur.
*------ Type pools
type-pools: sai.
*------ Class definitions and references
DATA: lo_zpdf_sign    TYPE REF TO zpdfco_global_esign_soap_ext,
      lo_system_fault TYPE REF TO cx_ai_system_fault,
      lo_appl_fault   type ref to cx_ai_application_fault.
*------ data
DATA: output TYPE zpdfcreate_pdf_signature_respo,
      input TYPE  zpdfcreate_pdf_signature.
DATA: wa_controller TYPE prxctrl.
DATA:  pdfout(255) TYPE c  VALUE
'C:/TEMP/pp-20080229-93ES-40010-0013439840-1690000005.pdf',
       pdfsign(255) TYPE c  VALUE
'C:/TEMP/pp-20080229-93ES-40010-0013439840-1690000005-sign.pdf',
        wa_objcont TYPE soli,
        objcont LIKE soli  OCCURS 0.
DATA: xlines TYPE string,
      buffer TYPE  xstring,
      x_msg  TYPE c LENGTH 100.
TRY.
    CREATE OBJECT lo_zpdf_sign
      EXPORTING
        logical_port_name = 't_systems'.
  CATCH cx_ai_system_fault .
ENDTRY.
* read unsigned pdf
OPEN DATASET pdfout FOR INPUT MESSAGE x_msg
                    IN BINARY MODE.
TRY.
    READ DATASET pdfout INTO xlines.
  CATCH cx_sy_file_open_mode.
    EXIT.
ENDTRY.
CLOSE DATASET pdfout.
* convert string
CALL FUNCTION 'SCMS_STRING_TO_XSTRING'
  EXPORTING
    text           = xlines
*   MIMETYPE       = ' '
*    encoding       = 'UTF-8'
IMPORTING
    buffer         = buffer
  EXCEPTIONS
    failed         = 1
    OTHERS         = 2  .
TRY.
    input-in0 = 'user'.
    input-in1 = 'password'.
    input-in2 =  buffer.
    input-in3 = 'affilinet'.
    CALL METHOD lo_zpdf_sign->create_pdf_signature
      EXPORTING
        input  = input
      IMPORTING
        output = output.
  CATCH cx_ai_system_fault INTO lo_system_fault.
    DATA: lv_message TYPE string.
    DATA: lv_message_long TYPE string.
    CALL METHOD lo_system_fault->if_message~get_text
      RECEIVING
        result = lv_message.
    CALL METHOD lo_system_fault->if_message~get_longtext
      RECEIVING
        result = lv_message_long.
    WRITE lv_message.
    WRITE lv_message_long.
  CATCH cx_ai_application_fault into lo_appl_fault.
    DATA: lv_messaap TYPE string.
    DATA: lv_messaap_long TYPE string.
    CALL METHOD lo_appl_fault->if_message~get_text
      RECEIVING
        result = lv_messaap.
    CALL METHOD lo_appl_fault->if_message~get_longtext
      RECEIVING
        result = lv_messaap_long.
    WRITE lv_messaap.
    WRITE lv_messaap_long.
ENDTRY.
LOOP AT output-controller INTO wa_controller.
  WRITE:/ wa_controller-field.
  WRITE:/ wa_controller-value.
ENDLOOP.
* store signed pdf
OPEN DATASET pdfsign FOR output MESSAGE x_msg
                    IN BINARY MODE.
transfer output-CREATE_PDF_SIGNATURE_RETURN
         to pdfsign.
Processing the soap call in the test programm ends in a system exception (cx_ai_system_fault)  with the message:
"General Error Es ist ein Fehler bei der Proxy-Verarbeitung aufgetreten (  PART UNKNOWN (NULL)    )"
It seems as if there is no response or a response in a wrong format given by the webservice.
We had a look at the ICF-Trace.
The request seems to be a proper soap-call.
But the response is not in XML-format and therefore could not be completely displayed.
it says:
Ungültig auf der obersten Ebene im Dokument. Fehler beim Bearbeiten der Ressource 'file:///C:/Dokumente und Einstellungen/S...
HTTP/1.1 200 OK
^
Could anybody help ?
Kind regards
Heinz

Answer 1

Hello Mathias,
in our case the problem was, that the WDSL used parameters, which were not correcty interpreted by the SAP-Routine that creates the proxy.
We changed the WDSL using only paramters covert by SAP.
Here ist the WSDL that worked fine:
<?xml version="1.0" encoding="utf-8" ?>
- <wsdl:definitions targetNamespace="https://soap.global-esign.com/axis/services/GlobalEsignSoapExt" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:tns="https://soap.global-esign.com/axis/services/GlobalEsignSoapExt" xmlns:tsi="http://GlobalEsign.tsi.de">
- <wsdl:documentation>
<sidl:sidl xmlns:sidl="http://www.sap.com/2007/03/sidl" />
</wsdl:documentation>
- <wsdl:types>
- <xsd:schema elementFormDefault="qualified" targetNamespace="https://soap.global-esign.com/axis/services/GlobalEsignSoapExt" xmlns="https://soap.global-esign.com/axis/services/GlobalEsignSoapExt">
- <xsd:complexType name="CreatePdfSignature">
- <xsd:sequence>
<xsd:element name="in0" type="xsd:string" />
<xsd:element name="in1" type="xsd:string" />
<xsd:element name="in2" type="xsd:base64Binary" />
<xsd:element name="in3" type="xsd:string" />
<xsd:element name="in4" type="xsd:boolean" />
<xsd:element name="in5" type="xsd:string" />
<xsd:element name="in6" type="xsd:string" />
</xsd:sequence>
</xsd:complexType>
</xsd:schema>
- <xsd:schema targetNamespace="http://GlobalEsign.tsi.de" xmlns="http://GlobalEsign.tsi.de">
<xsd:import namespace="https://soap.global-esign.com/axis/services/GlobalEsignSoapExt" />
<xsd:element name="CreatePdfSignature" type="tns:CreatePdfSignature" />
- <xsd:element name="CreatePdfSignatureResponse">
- <xsd:complexType>
- <xsd:sequence>
<xsd:element name="CreatePdfSignatureReturn" type="xsd:base64Binary" />
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>
</wsdl:types>
- <wsdl:message name="CreatePdfSignature">
<wsdl:part name="CreatePdfSignature" element="tsi:CreatePdfSignature" />
</wsdl:message>
- <wsdl:message name="CreatePdfSignatureResponse">
<wsdl:part name="CreatePdfSignatureResponse" element="tsi:CreatePdfSignatureResponse" />
</wsdl:message>
- <wsdl:portType name="GlobalEsignSoapExt">
- <wsdl:operation name="CreatePdfSignature">
<wsdl:input message="tns:CreatePdfSignature" />
<wsdl:output message="tns:CreatePdfSignatureResponse" />
</wsdl:operation>
</wsdl:portType>
</wsdl:definitions>
<wsdl:part name="in1" type="xsd:string"/>   was changed to <xsd:element name="in0" type="xsd:string" /> .
Please let me know, whether you succeeded.
Kind regards
Heinz Schäfe