Two entries with the same value for atom:updated

Date values SHOULD be as accurate as possible. For example, it would be generally inappropriate for a publishing system to apply the same timestamp to several entries which were published during the course of a single day.

Ensure that these atom:updated entries are as accurate as possible. This check is not something that can be automated.

If the two atom:entry elements in question were updated at the same time, then no action is necessary.