link updateviacache can only be used with rel=serviceworker Web Standard

Description

A link element with a updateviacache attribute can only be used with rel=serviceworker.

Applicable standards

• HTML5

Change history

• 5.27 Oct 2017 Added to W3 validator in August 2017.

This page describes a web site issue detected in HTML documents by SortSite Desktop and OnDemand Suite.

Rule ID: W3cHtml5LinkUpdateViaCacheServiceWorker