IIS log

Hi , I would love to know what it means when IIS logs information between pipeline like in below:

2012-11-15 00:13:35 W3SVC1 192.168.1.108 GET /xmlloader.asp type=loadform1&param1=8000000000000356&param2=00000000000D2B31 443 - 50.121.200.173 Mozilla/5.0+(Windows+NT+6.1;+WOW64)+AppleWebKit/537.11+(KHTML,+like+Gecko)+Chrome/23.0.1271.64+Safari/537.11 200 0 0 2012-11-15 00:13:35 W3SVC1 192.168.1.108 GET /xmlloader.asp type=loadform1&param1=8000000000000356&param2=00000000000D2B31|2367|800a0046|Permission_denied 443 - 50.121.200.173 Mozilla/5.0+(Windows+NT+6.1;+WOW64)+AppleWebKit/537.11+(KHTML,+like+Gecko)+Chrome/23.0.1271.64+Safari/537.11 500 0 0

What does |2367| mean?

Thanks & Regards