I could be mistaken, but it looks like you’re trying to use the developer functions (C functions) in your kamailio configuration. I’m guessing you want to use save() from the registrar module? Ben Kaufman From: sr-users &lt;sr-users-bounces(a)lists.kamailio.org&gt; On Behalf Of hamed r Sent: Saturday, September 18, 2021 5:25 AM To: sr-users(a)lists.kamailio.org Subject: [SR-Users] Error in ul_insert_ucontact() function of usrloc module The user is not added using the ul_insert_ucontact() function : ul_insert_ucontact("sip:900@192.168.51.138:1234<http://sip:900@192.168.51.138:1234>", "<sip:900@192.168.51.138:1234<http://sip:900@192.168.51.138:1234>>", "303", -1, "a2ecd821d4464d75851b73c35442b6ad", 2222, "0", "1", "MicroSIP/3.20.6", "udp:192.168.51.106:5060<http://192.168.51.106:5060>"); And the following error is displayed in the syslog: Sep 18 14:36:48 srv139937 kamailio: CRITICAL: <core> [core/cfg.y:3686]: yyerror_at(): parse error in config file /usr/local/etc/kamailio//kamailio.cfg, line 838, column 148: Too many arguments#012 Sep 18 14:36:48 srv139937 kamailio: CRITICAL: <core> [core/cfg.y:3686]: yyerror_at(): parse error in config file /usr/local/etc/kamailio//kamailio.cfg, line 838, column 148: '('')' expected (function call) Sep 18 14:36:48 srv139937 kamailio: CRITICAL: <core> [core/cfg.y:3686]: yyerror_at(): parse error in config file /usr/local/etc/kamailio//kamailio.cfg, line 838, column 148: bad command: missing ';'? Sep 18 14:36:48 srv139937 kamailio: CRITICAL: <core> [core/cfg.y:3683]: yyerror_at(): parse error in config file /usr/local/etc/kamailio//kamailio.cfg, line 838, column 150-152: bad command Sep 18 14:36:48 srv139937 kamailio: CRITICAL: <core> [core/cfg.y:3686]: yyerror_at(): parse error in config file /usr/local/etc/kamailio//kamailio.cfg, line 838, column 153: bad command Sep 18 14:36:48 srv139937 kamailio: CRITICAL: <core> [core/cfg.y:3683]: yyerror_at(): parse error in config file /usr/local/etc/kamailio//kamailio.cfg, line 838, column 155-171: bad command Sep 18 14:36:48 srv139937 kamailio: CRITICAL: <core> [core/cfg.y:3686]: yyerror_at(): parse error in config file /usr/local/etc/kamailio//kamailio.cfg, line 838, column 172: bad command Sep 18 14:36:48 srv139937 kamailio: CRITICAL: <core> [core/cfg.y:3683]: yyerror_at(): parse error in config file /usr/local/etc/kamailio//kamailio.cfg, line 838, column 174-198: bad command Sep 18 14:36:48 srv139937 kamailio: CRITICAL: <core> [core/cfg.y:3686]: yyerror_at(): parse error in config file /usr/local/etc/kamailio//kamailio.cfg, line 838, column 199: bad command Sep 18 14:36:48 srv139937 kamailio: ERROR: <core> [core/cfg.y:3532]: yyparse(): function used inside params of another function: is_method what shoud i do?