SAXParseException in pre archive.

[Brad Jones]

Hello, I'm new to DICOM/ XNAT.  I'm using a third party to de-identify the metadata in the DCM files.  1.5% (out of about 5000) of my files are returning the error below when imported into Xnat.  I'm guessing there is something missing in the headers, but I do not know what.

is there any documentation that can tell me what the required DICOM headers are?  or a log file to give me a more detail as to what might be missing?

XNAT has encountered an error with your request:

Exception: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Premature end of file.

If this error continues to occur, please contact your system administrator with information about how to recreate the problem.

[Brad Jones]

I was able to go into the /data/xnat/prearchive and see that when the xml is built it is 0kb in size.

I deleted it and rebuilt it using the button in the prearchival, and it came back as 0kb again.

I can use the  Download DCMTK Tools - dicom.offis.de  dcm2xml it gives me an xml and I see the headers

I have all of these in the file: 

• StudyInstanceUID
• SeriesInstanceUID
• Modality
• PatientID
• StudyDate
  
  I also the project subject and session in the composite string on 0010,21b0 
  
  the stack trace I am seeing in the prearchive log is:
  
  must contain exactly one session
  org.nrg.session.SessionBuilder$NoUniqueSessionException: No session found
  
  and 
  
  ust contain exactly one session
  org.nrg.session.SessionBuilder$NoUniqueSessionException: Multiple sessions found: [no session type identified]