Of course, here is the log :

2014-08-04 14:07:12,262 [        http-bio-9443-exec-642] ERROR dm.fronting.server.services.process.ProjectService  - CRRRS1007E  A problem occurred in the Requirements Management (RM) server: Entry [dcee8788115a18d4]
com.ibm.rdm.fronting.server.exception.BadRequestException: CRRRS3760E The project template with the following ID does not exist: Requirements Template for Testers.
    at com.ibm.rdm.fronting.server.exception.RRSException.newException(RRSException.java:222)
    at com.ibm.rdm.fronting.server.exception.RRSException.newBadRequestParametersException(RRSException.java:116)
    at com.ibm.rdm.fronting.server.exception.RRSException.newBadRequestException(RRSException.java:124)
    at com.ibm.rdm.fronting.server.services.process.internal.ProjectServiceInternal.doPostInternal(ProjectServiceInternal.java:191)
    at com.ibm.rdm.fronting.server.core.internal.RRSRestServiceBase.runInternalMethod(RRSRestServiceBase.java:728)
    at com.ibm.rdm.fronting.server.core.internal.RRSRestServiceBase.handleMethod(RRSRestServiceBase.java:625)
    at com.ibm.rdm.fronting.server.core.internal.RRSRestServiceBase.doPost(RRSRestServiceBase.java:140)
    at com.ibm.rdm.fronting.server.core.internal.RRSRestServiceBase.performService(RRSRestServiceBase.java:416)
    at com.ibm.rdm.fronting.server.core.internal.RRSRestServiceBase.service(RRSRestServiceBase.java:241)
    at com.ibm.team.jfs.app.servlet.AppContainerServlet.dispatchRequest(AppContainerServlet.java:164)
    at com.ibm.team.jfs.app.servlet.AppContainerServlet.service(AppContainerServlet.java:297)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
    at com.ibm.team.repository.servlet.AbstractTeamServerServlet.service(AbstractTeamServerServlet.java:1520)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
    at org.eclipse.equinox.http.registry.internal.ServletManager$ServletWrapper.service(ServletManager.java:180)
    at org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
    at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:126)
    at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:76)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
    at org.eclipse.equinox.servletbridge.BridgeServlet.service(BridgeServlet.java:120)
    at com.ibm.team.repository.server.servletbridge.JazzServlet.service(JazzServlet.java:74)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at com.ibm.team.repository.server.servletbridge.BridgeFilter.processDelegate(BridgeFilter.java:165)
    at com.ibm.team.repository.server.servletbridge.BridgeFilter.doFilter(BridgeFilter.java:198)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
    at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:312)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:906)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:929)
    at java.lang.Thread.run(Thread.java:761)
Request
    --Not Provided--
Response
    --Not Provided--
2014-08-04 14:07:12,459 [                   Thread-3219] ERROR .ibm.rdm.fronting.server.concurrent.RRSConcurrency  - Uncaught Exception
java.lang.RuntimeException: com.ibm.team.lpa.automation.TaskException: CRJCA0003E The Lifecycle Project Administration (LPA) application made a request that was answered by an unexpected response code. The request was: https://jazz.ablogix.fr:9443/rm/projects. The response was: HTTP/1.1 400 Bad Request.
    at com.ibm.team.lpa.automation.AsyncTask$TaskRunner.run(AsyncTask.java:42)
    at java.lang.Thread.run(Thread.java:761)
Caused by: com.ibm.team.lpa.automation.TaskException: CRJCA0003E The Lifecycle Project Administration (LPA) application made a request that was answered by an unexpected response code. The request was: https://jazz.ablogix.fr:9443/rm/projects. The response was: HTTP/1.1 400 Bad Request.
    at com.ibm.team.lpa.common.tasks.AbstractTask.handleError(AbstractTask.java:145)
    at com.ibm.team.lpa.common.tasks.CreateProjectTask.runTask(CreateProjectTask.java:170)
    at com.ibm.team.lpa.common.tasks.AbstractTask.run(AbstractTask.java:56)
    at com.ibm.team.lpa.automation.CompositeTask.run(CompositeTask.java:208)
    at com.ibm.team.lpa.automation.CompositeTask$MonitoredSubTask.run(CompositeTask.java:124)
    at com.ibm.team.lpa.automation.CompositeTask.run(CompositeTask.java:208)
    at com.ibm.team.lpa.common.tasks.LoggingCompositeTask.run(LoggingCompositeTask.java:37)
    at com.ibm.team.lpa.automation.AsyncTask$TaskRunner.run(AsyncTask.java:40)
    ... 1 more

Hum.. i didn't saw that was the RM application which raised the error.

In fact, I remember that the installation wasn't working because this application doesn't wanted to register itself with JTS.

I thought it was because i forgot to increase file limit in
/etc/security/limits.conf.
* hard nofile 65536
* soft nofile 65536
* hard nproc 10000
* soft nproc 10000

After a reboot, the RM app  register itself successfully with JTS.

Should i do : ./repotools-rm.sh -reindex ?

I'll try it.

EDIT : Nope, after ./repotools-rm.sh -reindex, same issue :/
EDIT 2 : Damn, there is no templates in the RM app.. Do you know how can i reinstall RM app ? Or finish the installation ? Maybe i can relaunch an install with IBM IM just for it.