New privilege required to access the Search landing page
Valid from Pega Version 7.4
After upgrading to Pega® Platform 7.4, users who do not have the pxAccessSearchLP privilege cannot access the Search landing page. The pxAccessSearchLP privilege is automatically assigned to the SysAdm4 role. If you have other roles that require access to the Search landing page, you must add the pxAccessSearchLP privilege to those roles.
For more information about assigning privileges to roles, see User privilege authorization. (Link to: basics/v6portal/landingpages/accessmanager/customizeprivilegestab.htm)