[jira] [Created] (PDFBOX-4860) Preflight doesn't catch repetition of elements in XMP

["Tilman Hausherr (Jira)" <ji...@apache.org>]

Tilman Hausherr created PDFBOX-4860:
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             Summary: Preflight doesn't catch repetition of elements in XMP
                 Key: PDFBOX-4860
                 URL: https://issues.apache.org/jira/browse/PDFBOX-4860
             Project: PDFBox
          Issue Type: Bug
          Components: Preflight
    Affects Versions: 2.0.19
            Reporter: Tilman Hausherr
         Attachments: Testdok-modified-003.pdf

We don't catch this:

https://www.pdf-online.com/osa/validate.aspx
Validating file "Testdok-modified-003.pdf" for conformance level pdfa-1a
Multiple occurrences of property 'pdf:Producer'.
Multiple occurrences of property 'xmp:CreateDate'.
Multiple occurrences of property 'xmp:CreatorTool'.
The value of the key ToUnicode is invalid but must be compliant to the ToUnicode CMap format.
The document does not conform to the requested standard.
The document contains fonts without appropriate character to unicode mapping information (ToUnicode maps).
The document's meta data is either missing or inconsistent or corrupt.
The document does not conform to the PDF/A-1a standard.
Done.

I'm only focusing on the repetition in this issue.



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