Autocomplete attribute must be used correctly
Autofill of input fields can significantly improve the user experience of those with certain disabilities, but it places a heavy responsibility on the interface side to fill the fields accurately and to gain user trust. To help assistive technologies to give the user the most meaningful and accurate output, WAI defined a list of "Input Purposes for User Interface Components", which consists of 53 common personal data values. These are the only valid values for the autocomplete attribute.
How Users Are Affected
An autocomplete field that has an invalid value might be ignored or misread by assistive technologies.
WCAG Success criteria
This issue might cause elements to fail one or more of the following Success criteria:
1.3.5 Identify Input Purpose (AA)