: Is using the Product Types Ontology with Schema.org still valid? 404 Errors You may have noticed my recent posts about Schema, as I am in the process of improving my local signals with search

@Nimeshi995

Posted in: #ProductontologyOrg #SchemaOrg #Url

You may have noticed my recent posts about Schema, as I am in the process of improving my local signals with search engines. If you haven't then don't worry here is just some of relevant Schema JSON-LD I'm using:

"@context": "http://schema.org",
"@type": "ProfessionalService",
"additionalType": "http://www.productontology.org/id/Web_design",
"name": "BYBE",


As you can see I'm using ProfessionalService with additionalType using The Product Types Ontology.

Since my local business is in the web design field I've opted to use:


Using: www.productontology.org/id/Web_design From: en.wikipedia.org/wiki/Web_design

However visiting www.productontology.org/id/Web_design I receive a 404 page:


ERROR (404): No respective entry available

productontology.org cannot provide a class definition fo the
requested URI. Reason: There is no
Wikipedia article en.wikipedia.org/wiki/Web_design for 'Web_design'. If you want to use this word (to be
precise: this "lemma") as a class, you must first create a
respective article in the English Wikipedia by clicking on the link
given above. Here is the direct link to create such a page in
Wikipedia: en.wikipedia.org/w/index.php?title=Web_design&action=edit.
productontology.org cannot provide a class definition for some
names. This can have several reasons: There is no
English Wikipedia article for the requested name (lemma). We
cannot show the respective entry for legal reasons, e.g. because the
requested name is a registered trademark. We may also block
certain lemmata if they are obviously unsuited as class names.



So the first thing I checked is if the page exists on Wikipedia and it does, so I thought maybe they don't support Web_design. So I visit their homepage and test their own examples and I'm surprised to find the same issue on everything.

Here is an example they list on the homepage:


Soldering_iron www.productontology.org/id/Soldering_iron
RDF/XML
N3/Turtle
HTML


Question(s):


Should those URL's be returning valid pages?
Should people avoid using The Product Types Ontology?

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