Cisco WCS guest user expires after few days

[csco11180321]

1) Hardware we are using:

WCS version 6.0.196.

WLC version 6.0

2) Configuration steps we carried out:

We have created guest user using Lobby admin account having for accessing WLC which we are having in network. it works fine for some days but after that we have observed the particular guest user account status showing expired on WCS. Wanted to mention we have used Unlimited tab for life time while creating guest user account. The Account life time for guest user at the point of configuration was showing ( status -- Active, Account Lifetime -- Never Expire)

The document we followed.

http://www.cisco.com/en/US/docs/wireless/wcs/6.0/configuration/guide/6_0manag.html#wp1086189

3) Problem we are facing.

After some days(we are not sure about how many days) the guest users account shows "Expired"

4) Requirement.

Configuration of particular user with account life time as never exipre.

Regards,

Pramod.

[csco11180321]

During the point of problem from WCS logs I observed the "Guestuser Service" is giving problem, below is the error. The detailed log is attached herewith.

14:11:39.488 ERROR[general] [24] [GuestUserService] User does not belong to group 'Lobby Ambassador' or defaults are not set COMMON-11,LobbyAmbDefaults

The issue is associated with mentioned bug

CSCti79856
Symptom:
WCS deletes the Guest User Template when trying to de-provision it from a controller. Instead of deleting the guest user from the selected controllers, the user is removed from all controllers and the template deleted from WCS.
Conditions:
Using the delete functionality on the Guest User Template Page

After upgrading WCS version from 6.0.196.0 to 7.0.172.0 issue was resolved. Thanks..