Issue with Document retrieval service

[dmalvi]

Hi,
i have observed inconsistent behaviour with ODWEK document retrieval service. The issue is intermittent wherein, for document download request, retrieval fails with below mentioned ODWEK error.
However on more attempts, i am able to able to retrieve the same document.
Could you please guide me on this.

Method : getDocument(WebApplicationContext applicationContext,GetDocumentRequest getDocumentRequestVO) Error executing content request against On-Demand. RequestType- DocumentRequest ErrMsg-Error occured during the process method in GetDocumentTask Message : Unable to restore hit from DocID Cause : null
com.ibm.edms.od.ODException: Unable to restore hit from DocID
        at com.ibm.edms.od.ODFolder.recreateHit(ODFolder.java:2022)
 
We have checked trace logs and found the below error.
 
ERROR ars3wapi.C(6459)Java_com_ibm_edms_od_ArsWWWInterface_apiGetInfoFromDocid:Current state rtn.RC=9 extId=0 pMsg=Unable to restore hit from DocID
 
It is not happening for all , but in some of the cases we have seen this.
 
Please find the below version details.
 
CMOD – 9.0
ODWEK - 9.0
OS – Linux red hat RHEL6.5
Fix Pack –9.0

[ibat]

That usually means the docid was altered for some reason. ex: it was sent through some URI request to a browser and special characters were altered.
If you check the docid from the search and compare it to the one when you try to retrieve it I is probably different.

[dmalvi]

Thanks,

however We are passing docid through a Java Object, is there any possibility that it could be altered somewhere?
we do the base 64 encoding of the docid , I have checked after decoding it and document was present for the that docid.