Google says its Rich Results Test supports structured data in JSON-LD, RDFa and Microdata, and shows which rich result types were found along with any errors or suggestions.
https://support.google.com/webmasters/answer/7445569?hl=enThe full answer on testing and validating schema markup is here:
https://aiwebpageseo.com/blog/how-to-test-and-validate-schema-markupWhich validator do you trust most, and have two tools ever given you different results for the same page?
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