JCO DATA_BUFFER_EXCEEDED exception

Question

Hi all,
while executing below code I got this error;
ERROR;
com.sap.mw.jco.JCO$Exception: (127) JCO_ERROR_FIELD_NOT_FOUND: Field EBELN not a member of RFC_DB_FLD
     at com.sap.mw.jco.JCO$MetaData.indexOf(Unknown Source)
     at com.sap.mw.jco.JCO$MetaData.getDescription(Unknown Source)
     at Test6.<init>(Test6.java:33)
     at Test6.main(Test6.java:62)
Exception in thread "main"
FOLLOWING CODE;
import java.util.ArrayList;
import com.sap.mw.jco.*;
import com.sap.mw.jco.JCO.Field;
import com.sap.mw.jco.JCO.Record;
public class Test6 {     
     JCO.Client mConnection;
     JCO.Repository mRepository;
     IFunctionTemplate ftemplate;
     public Test6() {
          try {
               mConnection =JCO.createClient("800","sapuser","sapuser","en","10.113.10.201","00");
               mConnection.connect();
               System.out.println("connection attribute:"+ mConnection.getAttributes());
               if (mConnection == null) {
                    System.out.println("Connection to SAP Server failed.");
               mRepository = new JCO.Repository("User", mConnection);
               ftemplate = mRepository.getFunctionTemplate("RFC_READ_TABLE");
          catch (Exception ex) {
               ex.printStackTrace();
               System.exit(1);
          JCO.Function function = ftemplate.getFunction();
          JCO.ParameterList importParamList = function.getImportParameterList();
          importParamList.setValue("EKKO", "QUERY_TABLE");//For Purchase Order
          importParamList.setValue(",", "DELIMITER");
          JCO.Table tableData = function.getTableParameterList().getTable("DATA");
          System.out.println(""+tableData);
          JCO.Table fields = function.getTableParameterList().getTable("FIELDS");
          System.out.println(""+fields);
          String sg =fields.getDescription("EBELN");
          System.out.println("...."+sg);
          mConnection.execute(function);     
          if (tableData.getNumRows() > 0) {
               do {
                    System.out.println("Purchase Order Details::");
                    for (JCO.FieldIterator e = tableData.fields();e.hasMoreElements();) {
                         JCO.Field field = e.nextField();
                         String str = field.getString();
                         String[] values = str.split(",");
                         for (int j = 0; j < values.length; j++) {
                              System.out.println("\t"+values[j].trim());
               } while (tableData.nextRow());
      else
               System.out.println("No results found");     
          mConnection.disconnect();
     public static void main (String args[]) {
          Test6 app = new Test6();
please suggest suitable code.....
Thanks in advance.....
Ramesh

Answer 1

Hi,
This line produces the error:
String sg =fields.getDescription("EBELN");
I would delete (comment out) these lines:
String sg =fields.getDescription("EBELN");
System.out.println("...."+sg);
Good luck, Roelof
PS what strange subject!?