PDF/A-3A validation: All properties specified in XMP form shall use either the predefined schemas defined in the XMP Specification

[Intelligent2013]

Source issues: #264

veraPDF report:

• root/document[0]/metadata[0](5 0 obj PDMetadata)/XMPPackage[0]/Properties[9](http://www.aiim.org/pdfua/ns/id/ - pdfuaid:part)

<rule specification="ISO 19005-3:2012" clause="6.6.2.3.1" testNumber="1" status="failed" failedChecks="1">
  <description>All properties specified in XMP form shall use either the predefined schemas defined in the XMP Specification, ISO 19005-1 or this part of ISO 19005, or any extension schemas that comply with 6.6.2.3.2</description>
  <object>XMPProperty</object>
  <test>isPredefinedInXMP2005 == true || isDefinedInMainPackage == true || isDefinedInCurrentPackage == true</test>
  <check status="failed">
    <context>root/document[0]/metadata[0](5 0 obj PDMetadata)/XMPPackage[0]/Properties[9](http://www.aiim.org/pdfua/ns/id/ - pdfuaid:part)</context>
  </check>
</rule>

• root/document[0]/metadata[0](5 0 obj PDMetadata)/XMPPackage[0]/Properties[4](http://purl.org/dc/elements/1.1/ - dc:title)

<rule specification="ISO 19005-3:2012" clause="6.6.2.3.1" testNumber="2" status="failed" failedChecks="6">
  <description>All properties specified in XMP form shall use either the predefined schemas defined in the XMP Specification, ISO 19005-1 or this part of ISO 19005, or any extension schemas that comply with 6.6.2.3.2</description>
  <object>XMPProperty</object>
  <test>isValueTypeCorrect == true</test>
  <check status="failed">
    <context>root/document[0]/metadata[0](5 0 obj PDMetadata)/XMPPackage[0]/Properties[4](http://purl.org/dc/elements/1.1/ - dc:title)</context>
  </check>
</rule>

[Intelligent2013]

Another locations:

location=Location [level=CosDocument, context=root/document[0]/metadata[0](5 0 obj PDMetadata)/XMPPackage[0]/Properties[4](http://purl.org/dc/elements/1.1/ - dc:title)]

location=Location [level=CosDocument, context=root/document[0]/metadata[0](5 0 obj PDMetadata)/XMPPackage[0]/Properties[6](http://purl.org/dc/elements/1.1/ - dc:description)]

location=Location [level=CosDocument, context=root/document[0]/metadata[0](5 0 obj PDMetadata)/XMPPackage[0]/Properties[7](http://purl.org/dc/elements/1.1/ - dc:creator)]

location=Location [level=CosDocument, context=root/document[0]/metadata[0](5 0 obj PDMetadata)/XMPPackage[0]/Properties[11](http://www.aiim.org/pdfua/ns/id/ - pdfuaid:part)]

location=Location [level=CosDocument, context=root/document[0]/metadata[0](5 0 obj PDMetadata)/XMPPackage[0]/Properties[11](http://www.aiim.org/pdfua/ns/id/ - pdfuaid:part)]

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?><x:xmpmeta xmlns:x="adobe:ns:meta/">
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
<rdf:Description xmlns:pdf="http://ns.adobe.com/pdf/1.3/" rdf:about="">
<pdf:Keywords/>
<pdf:Producer>Ribose Metanorma mn2pdf version 1.99</pdf:Producer>
<pdf:PDFVersion>1.7</pdf:PDFVersion>
</rdf:Description>
<rdf:Description xmlns:dc="http://purl.org/dc/elements/1.1/" rdf:about="">
<dc:format>application/pdf</dc:format>
<dc:title>Cereals and pulses — Specifications and test methods — Rice</dc:title>
<dc:language>
<rdf:Bag>
<rdf:li>en</rdf:li>
</rdf:Bag>
</dc:language>
<dc:description/>
<dc:creator>International Electrotechnical Commission; International Electrotechnical Commission; International Electrotechnical Commission; International Electrotechnical Commission</dc:creator>
<dc:date>
<rdf:Seq>
<rdf:li>2024-09-05T22:39:28+03:00</rdf:li>
</rdf:Seq>
</dc:date>
</rdf:Description>
<rdf:Description xmlns:pdfaid="http://www.aiim.org/pdfa/ns/id/" rdf:about="">
<pdfaid:conformance>A</pdfaid:conformance>
<pdfaid:part>3</pdfaid:part>
</rdf:Description>
<rdf:Description xmlns:pdfuaid="http://www.aiim.org/pdfua/ns/id/" rdf:about="">
<pdfuaid:part>1</pdfuaid:part>
</rdf:Description>
<rdf:Description xmlns:xmp="http://ns.adobe.com/xap/1.0/" rdf:about="">
<xmp:CreatorTool/>
<xmp:MetadataDate>2024-09-05T22:39:28+03:00</xmp:MetadataDate>
<xmp:CreateDate>2024-09-05T22:39:28+03:00</xmp:CreateDate>
</rdf:Description>
</rdf:RDF>
</x:xmpmeta><?xpacket end="r"?>

[Intelligent2013]

From ISO 19005-1:2005:

The namespace http://purl.org/dc/elements/1.1/ for dc:title is correct. I don't figure out what's wrong. I'll deep dive into the veraPDF validation code....

[petervwyatt]

You're referring to ISO 19005-1:2005 PDF/A-1 but the spec you should be looking at is ISO 19005-3:2012 PDF/A-3 as things changed - not the least of which PDF/A-1 is for Adobe PDF 1.4 whereas PDF/A-3 is for ISO 32000-1:2008 (PDF 1.7 <-- which is not the same thing as Adobe PDF 1.7!!!)

The issue with PDF/A-1,2,3 is that it will require an XMP Extension Schema for the PDF/UA-1 XMP metadata - see clause 6.7.8 in PDF/A-1. I will see if anyone I know has a pre-baked one you can "borrow"... (to check try removing the XMP PDF/UA-1 metadata).

[petervwyatt]

Some of the PDFs (such as PDFUA-Ref-2-02_Invoice.pdf) in this test corpus are both PDF/A-2 and PDF/UA-2: https://pdfa.org/resource/pdfua-reference-suite/ so please check the metadata of that PDF. Also, LibreOffice can generate dual PDF/A and PDF/UA-1 compliant PDFs - just be sure to check the correct boxes in the options dialog.

If you blindly cut'n'paste the XMP metadata blog from PDFUA-Ref-2-02_Invoice.pdf into your PDF then validate it, it should pass.

Shameless self-promotion: if you use Adobe Acrobat, then I have developed a few XMP info panels that also might be able to help confirm things (since Acrobat will only notice a single conformance to a standard). See https://github.com/petervwyatt/AcrobatCustomPanels/

[Intelligent2013]

@petervwyatt thank you for your help!
To fix this issue:

• add

<rdf:Description xmlns:pdfaExtension="http://www.aiim.org/pdfa/ns/extension/" xmlns:pdfaProperty="http://www.aiim.org/pdfa/ns/property#" xmlns:pdfaSchema="http://www.aiim.org/pdfa/ns/schema#" rdf:about="">
	<pdfaExtension:schemas>
		<rdf:Bag>
			<rdf:li rdf:parseType="Resource">
				<pdfaSchema:namespaceURI>http://www.aiim.org/pdfua/ns/id/</pdfaSchema:namespaceURI>
				<pdfaSchema:prefix>pdfuaid</pdfaSchema:prefix>
				<pdfaSchema:schema>PDF/UA identification schema</pdfaSchema:schema>
				<pdfaSchema:property>
					<rdf:Seq>
						<rdf:li rdf:parseType="Resource">
							<pdfaProperty:category>internal</pdfaProperty:category>
							<pdfaProperty:description>PDF/UA version identifier</pdfaProperty:description>
							<pdfaProperty:name>part</pdfaProperty:name>
							<pdfaProperty:valueType>Integer</pdfaProperty:valueType>
						</rdf:li>
						<rdf:li rdf:parseType="Resource">
							<pdfaProperty:category>internal</pdfaProperty:category>
							<pdfaProperty:description>PDF/UA amendment identifier</pdfaProperty:description>
							<pdfaProperty:name>amd</pdfaProperty:name>
							<pdfaProperty:valueType>Text</pdfaProperty:valueType>
						</rdf:li>
						<rdf:li rdf:parseType="Resource">
							<pdfaProperty:category>internal</pdfaProperty:category>
							<pdfaProperty:description>PDF/UA corrigenda identifier</pdfaProperty:description>
							<pdfaProperty:name>corr</pdfaProperty:name>
							<pdfaProperty:valueType>Text</pdfaProperty:valueType>
						</rdf:li>
					</rdf:Seq>
				</pdfaSchema:property>
			</rdf:li>
		</rdf:Bag>
	</pdfaExtension:schemas>
</rdf:Description>

• change from:

<dc:title>Title</dc:title>

to

<dc:title>
	<rdf:Alt>
		<rdf:li xml:lang="x-default">Title</rdf:li>
	</rdf:Alt>
</dc:title>

• change from

<dc:creator>Author1; Author2</dc:creator>

to

<dc:creator>
	<rdf:Seq>
		<rdf:li>Author1</rdf:li>
		<rdf:li>Author2</rdf:li>
	</rdf:Seq>
</dc:creator>

• change from

<dc:description>Text</dc:description>

to something .... (I need to find the example)
I'll change the common.xsl.

[Intelligent2013]

common.xsl updated in metanorma/mn-native-pdf#743

[Intelligent2013]

Done.