The si=3 (or the string equivalent si=sccp) parameter must be specified before the ssn parameter can be specified.
Recovery
Display the existing values for the si parameter. Enter the rtrv-appl-rtkey or rtrv-rmt-appl command.
Re-enter the ent/chg/dlt/rtrv-appl-rtkey or ent/dlt-rmt-appl 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.