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https://issues.apache.org/jira/browse/PDFBOX-1204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13193230#comment-13193230
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William Fausser commented on PDFBOX-1204:
-----------------------------------------

Hi Eric,
I was looking at this document:
http://www.aiim.org/documents/standards/PDF-A/ISO19005AppNotes.pdf

I was wondering with an OCR type document if only a partial font set is used 
and if this paragraph wouldmake any sense:
"Developers should be aware that although the PDF/A-1 specification implies 
that all glyphs in the embedded data must have a matching entry in the Widths 
table, only those glyphs actually used need to have Width entries."

so, I'm trying to understand if the above applies to the 3.3.1 error message 
returned.

Regards,
Bill
                
> OCR generated PDF/A  has problems with preflight validation
> -----------------------------------------------------------
>
>                 Key: PDFBOX-1204
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-1204
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Preflight
>    Affects Versions: 1.7.0
>            Reporter: William Fausser
>         Attachments: boyd.pdf
>
>
> /home/fausser/boyd.pdf is not valid, error(s):
> 2.1.2:Invalid Graphis object, The Info entry of a OutputIntent dictionary is 
> missing
> 3.3.1: Glyph error, CID 95 is missing from the Composite Font format 
> "HiddenHorzOCR"
> 7.2:Error on MetaData, ModificationDate present in the document catalog 
> dictionary doesn't match with XMP information
> Passes as a valid PDF/A with commercial validators Adobe Acrobat 10.x and 
> Callas

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