TAM Error AWXJC0050E

[8/1/08 11:16:51:373 EDT] 00000020 SystemErr R Caused by:
com.tivoli.pd.as.jacc.cfg.TAMConfigException: AWXJC0048E An error occurred during the configuration. The details are:
com.tivoli.pd.as.jacc.cfg.ConfigActionFailedException: AWXJC0050E The Tivoli Access Manager user, sec_master, failed to add the Tivoli Access Manager user, JACC_-264539269/cledt-123691.agna.amgreetings.com, to the Tivoli
Access Manager group, iv-admin. The details are: Wrappered Exception:java.net.BindException: Address already in use:
NET_Bind[HPDCO1050E Socket could not be created (8920).].. at
com.tivoli.pd.as.jacc.cfg.TAMConfigController.execute(TAMConfigController.java:156)

For this error, note the port 8920 in the message, then change the client listener port from default 8900:8999 to 8921:8999.