4012 (0FAC) (RC4012): MQRCCF_CONNECTION_REFUSED

Explanation

Connection refused.

The attempt to establish a connection to a remote system was rejected. The remote system might not be configured to allow a connection from this system.

For LU 6.2 either the user ID or the password supplied to the remote system is incorrect.
For TCP the remote system might not recognize the local system as valid, or the TCP listener program might not be started.

Programmer response

Correct the error or restart the listener program.