E5138 Cmd Rej: Rhost value must not match lhost/alhost/arhost
The value specified for the rhost parameter cannot be the same as the value specified for the alternate remote host or for the lhost or alhost parameter in the same association.
Recovery
Display the existing values. Enter the rtrv-assoc command.
Re-enter the chg-assoc command that generated this error message, specifying a valid combination of parameters. Refer to the command description in Commands User's Guide and to the Database Administration - IP7 User's Guide for assistance.