[SR-Users] Kamailio forward REGISTER return "general error"

Hi everyone, I am trying to forward registration from one kamailio instance to another one eg. UA1 <---> kamailioB <------> kamailioA I am trying to register on `kamailioA` with UA1. I have UA1 registered on kamailioA. I am routing SIP messages by adding this to `request_route` block: if (uri != myself) { forward(otherKamailioIP, 5060); } Where I am using as `otherKamilioIP on kamailioA the kamailioB IP address and vice versa. I can clearly see in Wireshark, that the SIP messages are routed correctly but I am getting 401 Unauthorized which is sent from kamailioA to kamailioB and then from kamailioB to UA1. I printed value of `auth_check` following this http://lists.sip-router.org/pipermail/sr-users/2014-November/085851.html and I am getting return code of `-1` which is according to the documentation http://kamailio.org/docs/modules/4.2.x/modules/auth_db.html#auth_db.f.www_a… the GENERIC ERROR. I don't know what to do next. Does anyone encounter this kind of error before? Thanks in advance