Hi All, I am trying to add PIDF-LO XML to INVITE, however i have had little success so far. My end goal is to create an invite like mentioned in https://docs.microsoft.com/en-us/openspecs/office_protocols/ms-sipre/4010da… I have the following config: request_route{ xlog("L_DBG","REQUEST RECEIVED \n ($mb) \n"); if (is_method("INVITE")) { xinfo("$ua\n"); regex_substring("$ua", "([a-f0-9]{12})",0, 1, "$var(asd)"); if($var(asd)!="") { http_client_query("http://127.0.0.1/location/$var(asd)","$var(result)"); xdbg("$rc ,[$var(result)]\n"); if(!has_body("application/pidf+xml")) { set_body_multipart("$rb", "application/sdp", "delimiter"); msg_apply_changes(); append_body_part($(var(result){s.unquote}), "application/pidf+xml"); msg_apply_changes(); } }else { xerr("NO MAC ADDRESS FOUND\n"); } } route("forward"); } which achieves the following but doesn't have the xml in the correct format. I have explored most of the modules but couldnt find a handy function for this. INVITE sip:service@10.0.1.133:5060 SIP/2.0 Via: SIP/2.0/TCP 169.254.172.2;branch=z9hG4bK3de6.d3b4cddbcbdba59a3e190c41b06ada15.0;i=1 From: sipp <sip:sipp@1.1.1.1:45907>;tag=21113SIPpTag001 To: service <sip:service@10.0.1.133:5060> Call-ID: 1-21113(a)1.1.1.1 CSeq: 1 INVITE Contact: sip:sipp@1.1.1.1:45907 Max-Forwards: 70 Subject: Performance Test Content-Length: 937 Content-Type: multipart/mixed;boundary="delimiter" Mime-Version: 1.0 --delimiter Content-Type: application/sdp v=0 o=user1 53655765 2353687637 IN IP4 172.31.87.143 s=- c=IN IP4 1.1.1.1 t=0 0 m=audio 6000 RTP/AVP 0 a=rtpmap:0 PCMU/8000 --delimiter Content-Type: application/pidf+xml <?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<presence xmlns:xsd=\"http:/ /www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/ XMLSchema-instance\" entity=\"sip:U SER9(a)SBSBVR00Test0m.ABC.com\&quot; xmlns=\"urn:ietf:params:xml:ns:pidf\">\n<tuple id=\"tuple0\">\n<status>\n<geopriv xmlns=\"urn:ietf:params:xml:ns:pidf:geopriv10\">\n<civicAddre ss xmlns=\"urn:ietf:params:xml:ns:pidf:geopriv10:civicAddr\">\n['<STS>Ave</STS>\\n', '<A1>WA</A1>\\n', '<A3>Redmond</A3>\\n', '<RD>163rd</RD>\\n', '<PC>98052</PC>\\n', '<POD --delimiter-- Regards, Adarsh Chauhan