When trying to update device credentials on a LMS 3.1 win2k3 server with patches CSCsu84143-01 and cwa1.1.0-win-CSCsv592911 installed, I got the error on the message attached. Don't have this LMS integrated with ACS.
After enabling Device and Credentials Repository debug on Common Services > Server > Admin > CS Log Configurations and reproducing the problem, I got the error showed on dcr.log file.
Does anyone have an idea about what can be wrong? I've found the same problem here in forum, but couldn't find an answer to this problem.