C9P004 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:
C9N002 manifest for SAS Model Implementation Platform Server Configuration 3.1
C8V004 manifest for SAS Model Implementation Platform Mid-Tier 3.1
D7Z001 manifest for SAS Model Implementation Platform Server 3.1