Error in creating JCo connection with destination type'Load-Balanced Con'

Question

Hi,
I am working on webdynpro application(NW 04s), i need to connect with the backend system(ECC 6.0) using model.I configured my SLD and created technical system successfully.
The technical system got created with an error:
CIM_ERR_ALREADY_EXISTS: Instance already exists: SAP_BCApplicationServer.CreationClassName="SAP_BCApplicationServer",Name="ID1.Number.01.HostName.ahsides"
But the system got created so I proceeded with Jco connection creation:
I need to create 2 Jco connections for this,
First with Data Type 'Application Data' & Destination Type 'Single-Server connection'. Second with Data Type 'Data Dictionary' & Destination type 'Load-balanced Connection'. 
The first Jco with 'Single-Server connection' got created successfully and ping and test is also successfull.
The second Jco connection with 'Load-Balanced Connection' got created successfull but it is throwing error while pinging and testing.
Ping Error : Failed to ping JCo destination 'WD_EMPLOYEE_RFC_METADATA_DEST'.
Test Error : com.sap.mw.jco.JCO$Exception: (102) JCO_ERROR_COMMUNICATION: JCO.Client not connected in repository call
Please help me in this.This problem was with 'Load-Balanced Connection' only.

Answer 1

Hi,
Have you taken a look at the file %windir%\system32\drivers\etc\services?
If you haven't, try and find the line sapms<sid>, where sid is de SID of the system you-re trying to reach.
If the line isn't there write it down like this.
sapms<sid>     36<nr>/tcp
That works for me.