G66004 is a "container" hot fix that contains "member" hot fixes which will update your SAS software components.
See "What is a container hot fix?" in the SAS Hot Fix FAQ for more information on container and member hot fixes.
A manifest listing the contents of each of the following "member" hot fixes is available:
G65004 manifest for SAS OpRisk VaR Java Client 4.21
G67004 manifest for SAS OpRisk VaR Mid-Tier 4.21
G68004 manifest for SAS OpRisk VaR Plug-in for SAS Management Console 4.21
G56004 manifest for SAS OpRisk VaR Server 4.21