Message Mapping error in UDF

Question

I am receiving errors when trying to activate my MM.  I believe the issues are in one of two UDF's.  These UDF's do work in another MM without error.  Below are the error's and UDF's.
ERRORS:
Activation of the change list canceled Check result for Message Mapping MM_WPDBBY_WPDBBY01_TO_POS_WAWAFILE | http://wawa.com/xi/erp/pos:  Starting compilation  Source code has syntax error:  /usr/sap/XID/DVEBMGS00/j2ee/cluster/server0/./temp/classpath_resolver/Map5420e070cabe11dcab4b00306ef38da9/source/com/sap/xi/tf/_MM_WPDBBY_WPDBBY01_TO_POS_WAWAFILE_.java:3291: cannot resolve symbol symbol : variable container location: class com.sap.xi.tf._MM_WPDBBY_WPDBBY01_TO_POS_WAWAFILE_ map = container.getTransformationParameters(); ^ /usr/sap/XID/DVEBMGS00/j2ee/cluster/server0/./temp/classpath_resolver/Map5420e070cabe11dcab4b00306ef38da9/source/com/sap/xi/tf/_MM_WPDBBY_WPDBBY01_TO_POS_WAWAFILE_.java:3293: cannot return a value from method whose result type is void return constant; ^ 2 errors
UDF's:
public String getSender(Container container){
String constant;
java.util.Map map;
// get constant map
map = container.getTransformationParameters();
constant = (String) map.get (StreamTransformationConstants.SENDER_SERVICE);
return constant;
IMPORTS:  com.sap.xi.mapping.parse.dom.;javax.xml.parsers.;java.io.;com.sap.aii.mapping.lookup.;org.w3c.dom.*;
public String getSeqNum(String fileType,String objNum,String Sender,Container container){
String request = "<ns0:ZRFC_NUMBER_GET_NEXT xmlns:ns0=\"urn:sap-com:document:sap:rfc:functions\"><NR_RANGE_NR>" + fileType + "</NR_RANGE_NR><OBJECT>" + objNum + "</OBJECT><QUANTITY/></ns0:ZRFC_NUMBER_GET_NEXT>";
InputStream isRequest = new ByteArrayInputStream(request.getBytes());
SystemAccessor accessor = null;
String num  = null;
try{
     // 1. Determine a channel.
     Channel channel = LookupService.getChannel(Sender, "R_RFC_ERP");
     // 2. Get a system accessor for the channel.
     accessor = LookupService.getSystemAccessor(channel);
     // 3. Create a payload according to the data type which the adapter expects.
     //    Use service.getBinaryPayload() for binary payload,
     //    and service.getTextPayload() for text payloads.
     Payload payload = LookupService.getXmlPayload(isRequest);
     // 4. Execute lookup.
     Payload response = accessor.call(payload);
     //Parse response
     DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
     DocumentBuilder builder = factory.newDocumentBuilder();
     InputStream resStream = response.getContent();
     Document doc = builder.parse(resStream);
     Element sequence = doc.getDocumentElement();
     NodeList number = sequence.getElementsByTagName("NUMBER");
     //Extract Number
     num = DOMUtil.getSimpleElementText((Element) number.item(0));
} catch (Exception e) {
     return e.getMessage();
} finally {
     try {
          if (accessor != null) accessor.close();
     } catch (Exception e) {
          return e.getMessage();
GlobalContainer gc = container.getGlobalContainer();
gc.setParameter("Num", num);
return num;
Any help is appreciated.
Regards,
Darrell

Answer 1

Fauver,
Just to narrow down the problem first remove the first udf and only use the 2nd user defined function. Also in the 2nd udf you have to change this line:
try{
// 1. Determine a channel.
Channel channel = LookupService.getChannel(Sender, "R_RFC_ERP");
In the above line instead of Sender you use the business service or business system where R_RFC_ERP RFC communication channel is created in Integration Directory. So you are hardcoding it first.
Once you have done this changes do save and test it once again. If this works then you can change back to original and your first udf needs to be checked.
Regards,
---Satish