Message

foo must be hourly, daily, weekly, monthly, or yearly

Explanation

sy:updatePeriod elements must be one of the following strings: "hourly", "daily", "weekly", "monthly", or "yearly".

Solution

Fix it. (Note that the value is case-sensitive, and should be all lowercase with no surrounding quotes.)

Not clear? Disagree?

You might be able to find help in one of these fine resources.

Copyright © 2002-4 Mark Pilgrim and Sam Ruby