RFC lookup error

Question

Hi all,
I am doing an RFC lookup to increment counter. I am facing a problem.
I followed the code written by Michael. https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/a03e7b02-eea4-2910-089f-8214c6d1b439
My udf is as shown below: -
String content = "";
MappingTrace importanttrace;
importanttrace = container.getTrace();
java.util.Map param = container.getTransformationParameters();
String MSGID = (String) param.get (StreamTransformationConstants.MESSAGE_ID);
// filling the string with our RFC-XML (with values)
String m="<?xml version="1.0" encoding="UTF-8"?><ns0:_-GLB_-ZGT_RFBIBL00_COUNTER xmlns:ns0="urn:sap-com:document:sap:rfc:functions"><IM_V_FILENAME>CA10.NCH.FCIPAY04</IM_V_FILENAME><IM_V_MSGID>"MSGID"</IM_V_MSGID><IM_V_WRNO>DEVWR0001725</IM_V_WRNO></ns0:_-GLB_-ZGT_RFBIBL00_COUNTER>";
importanttrace.addWarning("Input value is  "+m);
RfcAccessor accessor = null;
ByteArrayOutputStream out = null;
try
// 1. Determine a channel (Business system, Communication channel)
Channel channel = LookupService.getChannel(receiverBS,"CC_RFC_RCV_AMS_R3F_DEVWR001725");
// 2. Get a RFC accessor for a channel.
accessor = LookupService.getRfcAccessor(channel);
// 3. Create a xml input stream representing the function module request message.
InputStream inputStream = new ByteArrayInputStream(m.getBytes());
// 4. Create xml payload
XmlPayload payload = LookupService.getXmlPayload(inputStream);
// 5. Execute lookup.
Payload result = accessor.call(payload);
InputStream in = result.getContent();
out = new ByteArrayOutputStream(1024);
byte[] buffer = new byte[1024];
for (int read = in.read(buffer); read > 0; read = in.read(buffer)) {
out.write(buffer, 0, read);
content = out.toString();
catch(LookupException e)
importanttrace.addWarning("Error while lookup " + e.getMessage() );
catch(IOException e)
importanttrace.addWarning("Error " + e.getMessage() );
finally
if (out!=null) {
try {
out.close();
} catch (IOException e) {
importanttrace.addWarning("Error while closing stream " + e.getMessage() );
// 7. close the accessor in order to free resources.
if (accessor!=null) {
try {
accessor.close();
} catch (LookupException e) {
importanttrace.addWarning("Error while closing accessor " + e.getMessage() );
//returning the result u2013 RFC-XML.response
if ((content.substring(143,150)).equals("NOENTRY"))
ExceptionThrower.generate("INVALID INPUT DEVWR NUMBER OR ID" );
return "Nothing";
else
return (content.substring(143,155));
The problem i am facing is that, i am not able to pass the IM_V_MSGID parameter to the function module.
The other 2 parameters i can pass. that is IM_V_FILENAME and IM_V_WRNO.
i am able to extract the message ID using
java.util.Map param = container.getTransformationParameters();
String MSGID = (String) param.get (StreamTransformationConstants.MESSAGE_ID);
and displayed it in SXI_MONITOR trace also using importanttrace.addWarning("Input value is  "+m);
i got the correct MSGID in the trace.But the problem is that this value is not getting passed to the FM. Cos the table is supposed to increment the counter whenever the MSGID value changes.
I tried hardcoding the MSGID value to 'abc' or '123' like values but the same thing happended. The counter will not increment. The FM is working perfectly when i run it and change the MSGID values manually.
Thanks
Pratichi

Answer 1

Hi,
We have done this by creating an FM in XI ABAP stack:
FUNCTION Z_ZBXI_GET_PRE_MSG_ID.
""Local Interface:
*"  IMPORTING
*"     VALUE(I_CURRMSGID) TYPE  CHAR40
*"  EXPORTING
*"     VALUE(E_PREMSGID) TYPE  CHAR40
DATA: lv_currmsgid type SXMSPMAST-MSGGUID,
      lv_parentmsgid LIKE SXMSPMAST-PARENTMSG,
      lv_premsgid LIKE SXMSPMAST-MSGGUID.
lv_currmsgid = i_currmsgid.
select single PARENTMSG from SXMSPMAST into lv_parentmsgid where MSGGUID = lv_currmsgid.
e_premsgid = lv_parentmsgid.
ENDFUNCTION.
You need to call this FM through RFC lookup UDF in your mapping.
Let me know if it works for you.
Regards,
Shweta