# Schema Structured Data Testing Tool errors

**URL:** <https://community.metabrainz.org/t/schema-structured-data-testing-tool-errors/158192>\
**Category:** MusicBrainz\
**Tags:** schema, musicbrainz\
**Created:** [October 20, 2016, 2:54pm UTC](https://community.metabrainz.org/t/schema-structured-data-testing-tool-errors/158192 "2016-10-20T14:54:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![iantresman](https://community.metabrainz.org/user_avatar/community.metabrainz.org/iantresman/32/4510_2.png) [@iantresman](https://community.metabrainz.org/u/iantresman)\
**Post date:** [October 20, 2016, 2:54pm UTC](https://community.metabrainz.org/t/schema-structured-data-testing-tool-errors/158192/1 "2016-10-20T14:54:03Z")

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If I stick a MusicBrainz artist URL into Google schema Structured Data Testing Tool, it [shows errors](https://search.google.com/structured-data/testing-tool/u/0/#url=http%3A%2F%2Fmusicbrainz.org%2Fartist%2F329038ad-a098-4cd4-abb5-c56933b36d19). Is this something to be concerned about? Does MusicBrainz just need to update its JSON schema definitions?

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**Author:** ![chirlu](https://community.metabrainz.org/user_avatar/community.metabrainz.org/chirlu/32/45_2.png) [@chirlu](https://community.metabrainz.org/u/chirlu)\
**Post date:** [October 20, 2016, 4:23pm UTC](https://community.metabrainz.org/t/schema-structured-data-testing-tool-errors/158192/2 "2016-10-20T16:23:42Z")

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All the errors on that page are of just two types:

1. _Person is not a known valid target type for the byArtist property_ – This seems to be a shortcoming of the schema, which only [expects](https://schema.org/byArtist) groups, but not individuals.
2. _The property creditedTo is not recognized by Google for an object of type MusicAlbum._ – The main point seems to be _by Google_ here, because generally it [is allowable](https://schema.org/creditedTo). I’m not sure it should be considered an error. (A different issue would then be that the [schema.org](http://schema.org) definition expects an entity, not a string; but whatever.)

Regarding concerns, does it cause problems for you? If it did cause issues for Google, I would expect them to contact MeB, so probably not. Note that the MusicBrainz JSON-LD output was implemented for Google and paid for by them, so they do care about it.