The repository exists, checked out to scm-sync-configuration/checkoutConfiguration.
It cannot commit automatically, in the log i see:

Aug 27, 2012 4:54:01 PM hudson.plugins.scm_sync_configuration.SCMManipulator checkinFiles
SEVERE: [checkinFiles] Problem during commit of [[jobs/scm_test/config.xml]] : svn: E170001: Commit failed (details follow):
svn: E170001: Authentication required for 'svn@svn+ssh://svn'

I don't know if it has something to do with the format of the address, but the commit from this directory on master succeeds if made from a shell.