Answered By: Sarah Laaker
Last Updated: Jun 28, 2014     Views: 352

Some patrons get the following error when placing holds on Wash U or MOBIUS items: “Sorry, your ID number is not valid."  We've worked extensively with University systems staff and the vendor of MOBIUS, and we think we have pinpointed the problem: this definitely happens to people who use a dollar sign ($) in their WUSTL Key password.  Though not yet confirmed, we've heard reports that other special characters, including the period (.), bracket (<), tilde (~), and plus sign (+), have caused the same problem for some patrons.

While we hope the vendor will be able to fix this problem soon, if you have a $ or other special characters in your password, and you get this error when trying to make a local or MOBIUS request, you have two options.  You can change your WUSTL Key password so that it does not have a $ or the other special characters in it.  To do that, go to

Or, there is a workaround that does not require you to change your password.  This workaround only works when requesting through the MOBIUS catalog, not Wash U's local catalog.  If you are interested in the workaround, please contact Deb Ehrstein, ILL/Reserves Librarian, at, or Chris Brady, Circulation Librarian, at

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