Synchronizing Team Membership for Users and User-defined Groups
Users and user-defined groups can be members of teams. If group membership is modified from within Windchill, the membership of the teams in which the group is a member is automatically updated.
If the membership of one or more groups is modified using a third-party LDAP tool, then you can manually synchronize team membership by clicking the recompute group icon 
that is available from the right-click action menu for the group in the Participant Administration table.
that is available from the right-click action menu for the group in the Participant Administration table. | If the groups that have been updated using a third-party LDAP tool are not used in any context or shared teams, you do not need to recompute group membership; however, you should remove the groups from the participant cache by using the Remove from Cache icon  that is available from the right-click action menu for the group in the Participant Administration table. |