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This feed does not validate using W3C feed validator


I'm using the W3C feed validator but noticed that the example given (Enklare RSS-exempel med två artiklar från "Dagens press" (fiktivt exempel som XML) doesn't validate in there:

This feed does not validate.

line 22, column 0: Undefined item element: dcterms:publisher (2 occurrences) [help]

dcterms:publisherhttp://id.kb.se/organisations/SE9020043619</dcterms:publi ...

line 25, column 0: Undefined item element: dcterms:format (2 occurrences) [help]


line 40, column 0: Undefined item element: dcterms:creator [help]

dcterms:creatorAndersson, Sven/dcterms:creator

Changing the namespace from dcterms to dc (e.g. dcterms:publisher to dc:publisher fixes one problem but I wonder whether it is the correct approach.



  • The W3C Validator doesn't seem to interpret the namespace declarations in the beginning of the file (xmlns:dcterms="http://purl.org/dc/terms/").
    The format should be RSS 2.0 with the addition of some elements from MediaRSS 1.5.0 (http://search.yahoo.com/mrss/) and Dublin Core DCMI Metadata Terms (http://purl.org/dc/terms/). You should use rss_kbse.xsd (found here http://www.kb.se/namespace/rss/index.html) for validation.

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  • Hi Daniel

    thanks for your quick reply.

    I am now testing against the xsd files using xmllint.

    Running it I get these schema parse errors:

    xmllint --noout --schema rss_kbse.xsd dp-rssmallex.xml
    rss_kbse.xsd:76: element element: Schemas parser error : Element '{http://www.w3.org/2001/XMLSchema}element': Invalid value for maxOccurs (must be 0 or 1).
    ..56 more of these

    It this a problem of the schema or xmllint?


  • The XSD is XML Schema 1.1, and I'm afraid Xmllint doesn't support that.

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  • Hi Daniel,

    thanks for your answer.

    I've found this to work quite well for 1.1 https://jeszysblog.wordpress.com/2012/09/27/fre...

    I have a first basic version of my feed ready. How do I go about having this tested and accepted by KB? Does the publisher have to register first before I can get in touch with you?



  • You can e-mail it to me, and I can take a look at it. daniel.jansson[at]kb.se

    But the publisher has to register themselves to set up an account for the deliveries, but in the registration form they can assign you as the technical contact.

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