While the build itself woks fine, with subversion polling, I got E200015 error, even with correct Additional Credentials configured. This happens only for projects with variables in repo URL (but they are substituted correctly) or for repos with externals.

variables testcase:

Started on Apr 9, 2014 9:32:59 AM
Received SCM poll call on windows7 for DUMMY on 9.4.2014 9:32:54
ERROR: Failed to check repository revision for svn+ssh://jenkins@XXX.com/svn/XXX/trunk
org.tmatesoft.svn.core.SVNCancelException: svn: E200015: No credential to try. Authentication failed
at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.cancel(SVNErrorManager.java:37)
at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.cancel(SVNErrorManager.java:32)
at org.tmatesoft.svn.core.internal.wc.DefaultSVNAuthenticationManager.getFirstAuthentication(DefaultSVNAuthenticationManager.java:185)
at org.tmatesoft.svn.core.internal.io.svn.SVNSSHConnector.open(SVNSSHConnector.java:77)
at org.tmatesoft.svn.core.internal.io.svn.SVNConnection.open(SVNConnection.java:77)
at org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryImpl.openConnection(SVNRepositoryImpl.java:1252)
at org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryImpl.getLatestRevision(SVNRepositoryImpl.java:168)
at org.tmatesoft.svn.core.internal.wc2.ng.SvnNgRepositoryAccess.getRevisionNumber(SvnNgRepositoryAccess.java:118)
at org.tmatesoft.svn.core.internal.wc2.SvnRepositoryAccess.getLocations(SvnRepositoryAccess.java:148)
at org.tmatesoft.svn.core.internal.wc2.ng.SvnNgRepositoryAccess.createRepositoryFor(SvnNgRepositoryAccess.java:45)
at org.tmatesoft.svn.core.internal.wc2.remote.SvnRemoteGetInfo.run(SvnRemoteGetInfo.java:46)
at org.tmatesoft.svn.core.internal.wc2.remote.SvnRemoteGetInfo.run(SvnRemoteGetInfo.java:31)
at org.tmatesoft.svn.core.internal.wc2.SvnOperationRunner.run(SvnOperationRunner.java:20)
at org.tmatesoft.svn.core.wc2.SvnOperationFactory.run(SvnOperationFactory.java:1238)
at org.tmatesoft.svn.core.wc2.SvnOperation.run(SvnOperation.java:294)
at org.tmatesoft.svn.core.wc.SVNWCClient.doInfo(SVNWCClient.java:2461)
at hudson.scm.SubversionSCM.parseSvnInfo(SubversionSCM.java:1267)
at hudson.scm.CompareAgainstBaselineCallable.call(CompareAgainstBaselineCallable.java:78)
at hudson.scm.CompareAgainstBaselineCallable.call(CompareAgainstBaselineCallable.java:26)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:326)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at hudson.remoting.Engine$1$1.run(Engine.java:63)
at java.lang.Thread.run(Unknown Source)
Done. Took 56 ms
No changes

For externals, the error seems the same:

Started on Apr 9, 2014 9:34:59 AM
Received SCM poll call on windows7 for DUMMY2 on 9.4.2014 9:34:54
ERROR: Failed to check repository revision for svn+ssh://XXX.com/svn/XXX/trunk/EXT_REF
org.tmatesoft.svn.core.SVNCancelException: svn: E200015: No credential to try. Authentication failed
at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.cancel(SVNErrorManager.java:37)
at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.cancel(SVNErrorManager.java:32)
at org.tmatesoft.svn.core.internal.wc.DefaultSVNAuthenticationManager.getFirstAuthentication(DefaultSVNAuthenticationManager.java:185)
at org.tmatesoft.svn.core.internal.io.svn.SVNSSHConnector.open(SVNSSHConnector.java:77)
at org.tmatesoft.svn.core.internal.io.svn.SVNConnection.open(SVNConnection.java:77)
at org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryImpl.openConnection(SVNRepositoryImpl.java:1252)
at org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryImpl.getLatestRevision(SVNRepositoryImpl.java:168)
at org.tmatesoft.svn.core.internal.wc2.ng.SvnNgRepositoryAccess.getRevisionNumber(SvnNgRepositoryAccess.java:118)
at org.tmatesoft.svn.core.internal.wc2.SvnRepositoryAccess.getLocations(SvnRepositoryAccess.java:148)
at org.tmatesoft.svn.core.internal.wc2.ng.SvnNgRepositoryAccess.createRepositoryFor(SvnNgRepositoryAccess.java:45)
at org.tmatesoft.svn.core.internal.wc2.remote.SvnRemoteGetInfo.run(SvnRemoteGetInfo.java:46)
at org.tmatesoft.svn.core.internal.wc2.remote.SvnRemoteGetInfo.run(SvnRemoteGetInfo.java:31)
at org.tmatesoft.svn.core.internal.wc2.SvnOperationRunner.run(SvnOperationRunner.java:20)
at org.tmatesoft.svn.core.wc2.SvnOperationFactory.run(SvnOperationFactory.java:1238)
at org.tmatesoft.svn.core.wc2.SvnOperation.run(SvnOperation.java:294)
at org.tmatesoft.svn.core.wc.SVNWCClient.doInfo(SVNWCClient.java:2461)
at hudson.scm.SubversionSCM.parseSvnInfo(SubversionSCM.java:1267)
at hudson.scm.CompareAgainstBaselineCallable.call(CompareAgainstBaselineCallable.java:78)
at hudson.scm.CompareAgainstBaselineCallable.call(CompareAgainstBaselineCallable.java:26)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:326)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at hudson.remoting.Engine$1$1.run(Engine.java:63)
at java.lang.Thread.run(Unknown Source)
svn+ssh://XXX.com/svn/XXX/trunk is at revision 675
ERROR: Failed to check repository revision for svn+ssh://XXX.com/svn/XXX/trunk/EXT_REF/src
org.tmatesoft.svn.core.SVNCancelException: svn: E200015: No credential to try. Authentication failed
at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.cancel(SVNErrorManager.java:37)
at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.cancel(SVNErrorManager.java:32)
at org.tmatesoft.svn.core.internal.wc.DefaultSVNAuthenticationManager.getFirstAuthentication(DefaultSVNAuthenticationManager.java:185)
at org.tmatesoft.svn.core.internal.io.svn.SVNSSHConnector.open(SVNSSHConnector.java:77)
at org.tmatesoft.svn.core.internal.io.svn.SVNConnection.open(SVNConnection.java:77)
at org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryImpl.openConnection(SVNRepositoryImpl.java:1252)
at org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryImpl.getLatestRevision(SVNRepositoryImpl.java:168)
at org.tmatesoft.svn.core.internal.wc2.ng.SvnNgRepositoryAccess.getRevisionNumber(SvnNgRepositoryAccess.java:118)
at org.tmatesoft.svn.core.internal.wc2.SvnRepositoryAccess.getLocations(SvnRepositoryAccess.java:148)
at org.tmatesoft.svn.core.internal.wc2.ng.SvnNgRepositoryAccess.createRepositoryFor(SvnNgRepositoryAccess.java:45)
at org.tmatesoft.svn.core.internal.wc2.remote.SvnRemoteGetInfo.run(SvnRemoteGetInfo.java:46)
at org.tmatesoft.svn.core.internal.wc2.remote.SvnRemoteGetInfo.run(SvnRemoteGetInfo.java:31)
at org.tmatesoft.svn.core.internal.wc2.SvnOperationRunner.run(SvnOperationRunner.java:20)
at org.tmatesoft.svn.core.wc2.SvnOperationFactory.run(SvnOperationFactory.java:1238)
at org.tmatesoft.svn.core.wc2.SvnOperation.run(SvnOperation.java:294)
at org.tmatesoft.svn.core.wc.SVNWCClient.doInfo(SVNWCClient.java:2461)
at hudson.scm.SubversionSCM.parseSvnInfo(SubversionSCM.java:1267)
at hudson.scm.CompareAgainstBaselineCallable.call(CompareAgainstBaselineCallable.java:78)
at hudson.scm.CompareAgainstBaselineCallable.call(CompareAgainstBaselineCallable.java:26)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:326)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at hudson.remoting.Engine$1$1.run(Engine.java:63)
at java.lang.Thread.run(Unknown Source)
Done. Took 93 ms
No changes