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question asked: Apr 30 '18, 9:21 p.m.
question was seen: 1,971 times
last updated: May 01 '18, 8:57 p.m.

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What could be causing a 400 bad request on item retrieval in DNG?

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Mara Puisite (11●1) | asked Apr 30 '18, 9:21 p.m.

 DNG version: 6.0.5


When we create an item in DNG via our API integration, when we try to retrieve the same item, we get a 400 bad request without much more detail. 
Some more pieces that we tracked down from our logs were around a lot of warnings about an invalid cookie with the expiry being in 1994 for the LtpaToken2 cookie (unsure if those are related).
We also took a look at the DNG logs that GM sent us and saw "<unauthenticated>" as a part of it, so it seems that maybe this is related to the LtpaToken2.

Also, these entries seemed to be connected: 
java.lang.NullPointerException
at com.hp.hpl.jena.rdf.model.impl <wbr> .ModelCom.add(ModelCom.java: <wbr> 1089)
at com.hp.hpl.jena.rdf.model.impl <wbr> .ResourceImpl.addProperty(Reso <wbr> urceImpl.java:280)

Any ideas/pointers as to what to look at to figure this out?

Comments
Donald Nong commented Apr 30 '18, 10:05 p.m.

The LtpaToken2 expiry warnings are definitely unrelated. The NullPointerException appears to be caused by some corruption in the DNG index, but whether it is related is a different story. I expect a bit more information returned in the HTTP response body or the rm.log file for the HTTP 400 error.

Mara Puisite commented May 01 '18, 11:53 a.m.

I attached what we found in the DNG logs in more length, as far as the API response, we are not getting much.  

Mara Puisite commented May 01 '18, 11:57 a.m.

 2018-04-26 17:10:25,712 [Default Executor-thread-24934 @@ 17:10 <unauthenticated> <Apache-HttpClient/4.5.3 (Java/1.8.0_152)@10.127.157.80> /rm/resources/_1sGcUUjFEeicSvyzNxjX_g] ERROR server.services.calm.internal.OSLC20ContentHandler  - TRACER (10) >>>

=STEP= CALL: OSLC20ContentHandler::handleProcessProperties
=STEP= CALL: OSLC20ContentHandler::handleProcessProperties

Mara Puisite commented May 01 '18, 11:58 a.m.

 2018-04-26 16:59:42,992 [Default Executor-thread-2524 @@ 16:59 <unauthenticated> <Apache-HttpClient/4.5.3 (Java/1.8.0_152)@10.127.157.80> /rm/resources/_1gXtcUjFEeicSvyzNxjX_g] ERROR ibm.rdm.fronting.server.services.RMRestServiceBase  - CRRRS1007E  A problem occurred in the Requirements Management (RM) server: Entry [826528af870faa90]

java.lang.NullPointerException
at com.hp.hpl.jena.rdf.model.impl.ModelCom.add(ModelCom.java:1089)
at com.hp.hpl.jena.rdf.model.impl.ResourceImpl.addProperty(ResourceImpl.java:280)
at com.ibm.rdm.fronting.server.services.calm.internal.OSLC20ContentHandler.processAttributes(OSLC20ContentHandler.java:1560)
at com.ibm.rdm.fronting.server.services.calm.internal.OSLC20ContentHandler.addProperties(OSLC20ContentHandler.java:1437)
at 

Mara Puisite commented May 01 '18, 11:58 a.m.

 space is limited and i dont see where to add an attachment file.. 

Donald Nong commented May 01 '18, 8:57 p.m.

This forum is not meant for troubleshooting issues like this. If log files needs to be examined, you should contact IBM Support and upload the log files to the ticket.

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