Adding RRDI certificate to Tomcat (enable HTTPS on RRDI)

I'm having Entrusts certificates on Jazz-team server and also in WebSphere where the RRDI is installed. But I think I'm missing something because I'm getting error on JTS.LOG that Entrusts certificate is not trusted. There is also same kind of errors on RRDI in WebSphere that Entrust certificate is not trusted. When I use browser and browse the CLM and RRDI addresses the certificates are trusted by browsers.

The error in JTS.LOG is:

2013-08-28 21:29:00,093 [http-bio-9443-exec-1742 @@ 21:28 simos /jts/service/com.ibm.team.reports.service.cognos.internal.ICognosReportService/] ERROR com.ibm.team.reports.service.cognos                 - ; nested exception is: 
	javax.net.ssl.SSLHandshakeException: com.ibm.jsse2.util.j: PKIX path building failed: java.security.cert.CertPathBuilderException: PKIXCertPathBuilderImpl could not build a valid CertPath.; internal cause is: 
	java.security.cert.CertPathValidatorException: The certificate issued by CN=Entrust Certification Authority - L1C, OU="(c) 2009 Entrust, Inc.", OU=www.entrust.net/rpa is incorporated by reference, O="Entrust, Inc.", C=US is not trusted; internal cause is: 
	java.security.cert.CertPathValidatorException: Certificate chaining error Connecting to https://jazzraportointi.kela.fi:9083/reporting
AxisFault
 faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException
 faultSubcode: 
 faultString: javax.net.ssl.SSLHandshakeException: com.ibm.jsse2.util.j: PKIX path building failed: java.security.cert.CertPathBuilderException: PKIXCertPathBuilderImpl could not build a valid CertPath.; internal cause is: 
	java.security.cert.CertPathValidatorException: The certificate issued by CN=Entrust Certification Authority - L1C, OU="(c) 2009 Entrust, Inc.", OU=www.entrust.net/rpa is incorporated by reference, O="Entrust, Inc.", C=US is not trusted; internal cause is: 
	java.security.cert.CertPathValidatorException: Certificate chaining error
 faultActor: 
 faultNode: 
 faultDetail: 
	{http://xml.apache.org/axis/}stackTrace:javax.net.ssl.SSLHandshakeException: com.ibm.jsse2.util.j: PKIX path building failed: java.security.cert.CertPathBuilderException: PKIXCertPathBuilderImpl could not build a valid CertPath.; internal cause is: 
	java.security.cert.CertPathValidatorException: The certificate issued by CN=Entrust Certification Authority - L1C, OU="(c) 2009 Entrust, Inc.", OU=www.entrust.net/rpa is incorporated by reference, O="Entrust, Inc.", C=US is not trusted; internal cause is: 
	java.security.cert.CertPathValidatorException: Certificate chaining error
	at com.ibm.jsse2.o.a(o.java:9)
	at com.ibm.jsse2.SSLSocketImpl.a(SSLSocketImpl.java:567)
	at com.ibm.jsse2.kb.a(kb.java:287)
	at com.ibm.jsse2.kb.a(kb.java:481)
	at com.ibm.jsse2.lb.a(lb.java:456)
	at com.ibm.jsse2.lb.a(lb.java:578)
.........
Caused by: com.ibm.jsse2.util.j: PKIX path building failed: java.security.cert.CertPathBuilderException: PKIXCertPathBuilderImpl could not build a valid CertPath.; internal cause is: 
	java.security.cert.CertPathValidatorException: The certificate issued by CN=Entrust Certification Authority - L1C, OU="(c) 2009 Entrust, Inc.", OU=www.entrust.net/rpa is incorporated by reference, O="Entrust, Inc.", C=US is not trusted; internal cause is: 
	java.security.cert.CertPathValidatorException: Certificate chaining error
	at com.ibm.jsse2.util.h.b(h.java:116)
	at com.ibm.jsse2.util.h.b(h.java:91)
	at com.ibm.jsse2.util.g.a(g.java:22)
	at com.ibm.jsse2.pc.a(pc.java:98)
	at com.ibm.jsse2.pc.checkServerTrusted(pc.java:31)
	at com.ibm.jsse2.pc.b(pc.java:11)
	at com.ibm.jsse2.lb.a(lb.java:540)
	... 66 more
Caused by: java.security.cert.CertPathBuilderException: PKIXCertPathBuilderImpl could not build a valid CertPath.; internal cause is: 
	java.security.cert.CertPathValidatorException: The certificate issued by CN=Entrust Certification Authority - L1C, OU="(c) 2009 Entrust, Inc.", OU=www.entrust.net/rpa is incorporated by reference, O="Entrust, Inc.", C=US is not trusted; internal cause is: 
	java.security.cert.CertPathValidatorException: Certificate chaining error
	at com.ibm.security.cert.PKIXCertPathBuilderImpl.engineBuild(PKIXCertPathBuilderImpl.java:411)
	at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:258)
	at com.ibm.jsse2.util.h.b(h.java:121)
	... 72 more
Caused by: java.security.cert.CertPathValidatorException: The certificate issued by CN=Entrust Certification Authority - L1C, OU="(c) 2009 Entrust, Inc.", OU=www.entrust.net/rpa is incorporated by reference, O="Entrust, Inc.", C=US is not trusted; internal cause is: 
	java.security.cert.CertPathValidatorException: Certificate chaining error
	at com.ibm.security.cert.BasicChecker.<init>(BasicChecker.java:111)
	at com.ibm.security.cert.PKIXCertPathValidatorImpl.engineValidate(PKIXCertPathValidatorImpl.java:178)
	at com.ibm.security.cert.PKIXCertPathBuilderImpl.myValidator(PKIXCertPathBuilderImpl.java:737)
	at com.ibm.security.cert.PKIXCertPathBuilderImpl.buildCertPath(PKIXCertPathBuilderImpl.java:649)
	at com.ibm.security.cert.PKIXCertPathBuilderImpl.engineBuild(PKIXCertPathBuilderImpl.java:357)
	... 74 more
Caused by: java.security.cert.CertPathValidatorException: Certificate chaining error
	at com.ibm.security.cert.CertPathUtil.findIssuer(CertPathUtil.java:298)
	at com.ibm.security.cert.BasicChecker.<init>(BasicChecker.java:108)
	... 78 more