Problems connecting from a COBOL program

If the COBOL program cannot connect to the c-tree Server correctly, the following error is returned:

30,5510

There are three possible causes for this error:

•	the c-tree Server is not active

•	the c-tree Server cannot be reached due to network problems or firewalls

•	the version of the client library doesn’t match with the version of the server

Additional information are available in the client log file. See <log> for details.