The iptps parameter must be specified for IPGWx linksets.
Recovery
Display the current linkset information. Enter the rtrv-ls command.
The ipgwapc parameter must have a value of yes for an IPGWx linkset.
Revise the linkset settings as necessary. Refer to the Database Administration - IP7 User's Guide for assistance.
Re-enter the ent/chg-ls 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