login/ticketcache_off is a SAP Parameter attribute which is used to control switch off caching for the SAP Logon Ticket information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
By setting the parameter to value 1, it is possible to switch off the
caching for the SAP Logon Ticket (default 0 = Caching activated)
See SAP Parameter Documentation for full SAP documentation for this profile parameter.