I'm trying to validate the links via https://validator.w3.org/checklink, but getting error
Status: 501 Protocol scheme 'tel' is not supported
I tried to search on google and went through with many articles I don't find satisfying answers.
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This means that the validator has not been programmed to test tel: URLs in its process of checking links on a page. The testing would mean actually making a telephone call; and this is what you can do to test a link with a tel: URL: open the page in a browser that supports such links and activate the link.
Jukka K. Korpela
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Hi Jukka Thank you, Do we have any reference link to confirm the same – Yogesh Singh Aug 17 '17 at 17:32