With asciidoctor-pdf -a optimize=PDF/A-1 mytext.adoc which is a simple testfile
:author: Maxim Kim
:subject: pdfa Test
:keywords: Keyw1, Keyw2
:doctype: article
some text
Now a PDF is created without errors or warnings, but if fails the PDF\A check with veraPDF. Now depending on which standard I try to build and to check the validation error is slightly different, but the suberror is always the same:
DeviceRGB colour space is used without RGB output intent profile
Sometimes veraPDF also says that RGB or CMYK should be used, but not both. So my question now: How can I include one of those intent profiles into the PDF. Unfortunately the search on PDF\A with asciidoctor-pdf has little information.
Edit: After a lot of searching I found this comment . So apparently asciidoc-pdf shouldn't be used to create pdf with PDF\A standard.