Adaptive RFC connection for MetaData fails

[Former Member]

When testing the JCo connection for RFC MetaData, the following error occurs:

...

Connect to message server...

ERROR service '?' unknown...

...

The connection for application data works fine. The system user used in the JCo destination has SAP_ALL / SAP_NEW.

It seems like something on the R3 side is missing. Any Ideas???

[Former Member · Accepted solution]

Hi

Configure your Message server in SAP. Ensure that your c:\winnt\system32\drivers\etc\services file has the entry

sapms<3 letter System id> 36<SystemNumber>/tcp

Then go to SAP logon. click on your system description say "DEV" and click on Groups. Enter the 3 letter system id in the drop down shown and also enter the Application server host name and then click on Generate list.

If your Message server is working then you would be getting logon groups. If not ask your basis guy.

Once again configure your Metadata connection alone and restart SLD. You could also restart J2EE just to be on the safer side.

Let me know if you require more information.

regards

ravi

[Former Member · Accepted solution]

Tnx, this helped.

It turns out that the metadata connection needs a load balanced (i.e. via Msg server) connection.

As this is a Dev system, we were trying to use single connections both JCo setups.

Working fine now...

[Former Member · Accepted solution]

Forgot to update ur points...