See Success Criterion 2.4.4 (Link Purpose (In Context))
The objective of this technique is to demonstrate how to use a title
attribute on an anchor element to provide additional text describing a link. The
title attribute is used to provide additional information to help clarify
or further describe the purpose of a link. If the supplementary information provided
through the title attribute is something the user should know before
following the link, such as a warning, then it should be provided in the link text
rather than in the title attribute.
Because of the extensive user agent limitations in supporting access to the title attribute, authors should use caution in applying this technique. For this reason, it is preferred that the author use technique C7: Using CSS to hide a portion of the link text (CSS) or
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Examine the source code for anchor elements.
For each anchor element that has a title attribute, check that the
title attribute together with the link text describes the purpose
of the link.
Check #1 is true.
If this is a sufficient technique for a success criterion, failing this test procedure does not necessarily mean that the success criterion has not been satisfied in some other way, only that this technique has not been successfully implemented and can not be used to claim conformance.