[fj-doc-mod-fop] fail to create a PDF which is both compliant to PDF/A-1b and PDF/UA-1

[fugerit79]

It seems setting both PDF/A and PDF/UA profile leads to this error on PDF/A validation :

"XMP property pdfuaid:part not defined in current schema."

Whereas PDF/UA validation succeds

PDF/A checked with : https://avepdf.com/en/pdfa-validation ( and Adobe )
PDF/UA checked with : https://check.axes4.com/en/

Here is a simple output of a PDF/A-1b and PDF/UA-1

Actually it seems that this property is added to the output PDF :

        <rdf:Description xmlns:pdfuaid="http://www.aiim.org/pdfua/ns/id/" rdf:about="">
            <pdfuaid:part>1</pdfuaid:part>
        </rdf:Description>

Which is leading to the validation error.