Hi Rik,
I guess it's not supported yet.
In "lpdf-fmt.lua" it says:
[..]
["pdf/a-3a"] = { -- untested; NEW: any type of attachment is allowed
[..]
I remember adding the "a-2a" and "a-3a" versions back when Hans and I
added experimental support for "PDF/UA-1" (which is based on "PDF/A-3a",
but much more limited). This all lies back a few years, can't remember
the details.
So we have only basic support for "PDF/A-3a", the more advanced features
of that format are not supported yet. The main problem here is the
lacking PDF/A documentation (ISO pay wall). I guess there is currently
no real reason to use that format at all (?).
Best wishes,
Peter
Am 06.12.2019 um 03:11 schrieb Rik Kabel:
> Hello list,
>
> The following document fails PDF/A-3a validation. It passes without the
> attachment.
>
> \setuplanguage [en]
> \setuptagging [state=start]
> \setupinteraction [state=start]
> \setupbackend [format={pdf/a-3a},profile={default_gray.icc},
> intent={ISO coated v2 300\letterpercent\space
> (ECI)}]
> \setupstructure [state=start,method=auto]
> \setupcolors [pagecolormodel=auto,start=yes,rgb=no,cmyk=no]
> \setupbodyfont [Palatino,10pt]
> \starttext
>
> Attaching a plain text file.
>
> % \attachment [file=test.tex,
> % type={text/plain;charset=UTF-8}]
> % The \ConTeXt\ source code for this document is attached here.
> \attachment [file=testa.pdf,
> type={application/pdf}]
> A successfully validated pdf/a-3a file is attached here.
>
> \stoptext
>
> pdf-online <https://www.pdf-online.com/osa/validate.aspx>reports:
>
> Validating file "test.pdf" for conformance level pdfa-3a
> The key F is required but missing.
> The appearance dictionary doesn't contain an entry.
> File specification 'testa.pdf' not associated with an object.
> The document does not conform to the requested standard.
> The document doesn't conform to the PDF reference (missing required
> entries, wrong value types, etc.).
> The document contains hidden, invisible, non-viewable or
> non-printable annotations.
> The document contains annotations or form fields with ambigous or
> without appropriate appearances.
> The document does not conform to the PDF/A-3a standard.
> Done.
>
> My understanding is that 3-a should support both pdf and non-pdf
> attachments. This fails in a similar manner with both pdf/a-3a-validated
> files and with plain text files. I also tested with verapdf, and it also
> rejected the document with an attachment.
>
> Is this my error, or is it not yet supported?
>
> --
> Rik Kabel
>
>
>
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