[SR-Users] Check if user is registered before reply is routed

[Dmytro Bogovych]

Greetings.
Sorry for previous false letter.

I want to check if user is registered before reply is routed to its
target user agent.

Imho it should be like this:

onreply_route[MANAGE_REPLY] {
  if ($rm=="INVITE") {
    if (registered("location", $ru)) {
      # Do job - pause for 15 seconds and give chance to reregister
    }
  }
}

But kamailio complains on registered function
 0(6274) ERROR: <core> [cfg.y:3295]: yyparse(): misused command registered
 0(6274) : <core> [cfg.y:3439]: yyerror_at(): parse error in config
file /usr/local/etc/kamailio/kamailio.cfg, line 1121, column 35:
Command cannot be used in the block

Documentation confirms - registered() function can be used in
REQUEST_ROUTE and FAILURE_ROUTE only.

Is it possible to check if user is registered when reply is processed
in scripts?

Thank you!