Fix Information.

Concurrent Fix - A fix that can be installed and activated on a running system without impacting customer operations. 

Disruptive Fix - A fix that requires an IPL to install and activate.

Deferred Fix - The installation of a deferred fix is concurrent to client operations. However, the fix will not become active until an IPL (system level) is performed.

HIPER  High Impact/PERvasive    Should be installed as soon as possible. SPE SPEcial Attention Should be installed at earliest convenience. Fixes for low potential high impact problems. ATT ATTention Should be installed at earliest convenience. Fixes for low potential low to medium impact problems.