diff --git a/perl-xCAT/xCAT/Schema.pm b/perl-xCAT/xCAT/Schema.pm
index f7033a2e3..cc2a21f0b 100644
--- a/perl-xCAT/xCAT/Schema.pm
+++ b/perl-xCAT/xCAT/Schema.pm
@@ -736,15 +736,15 @@ servicenode => {
  descriptions => {
   node => 'The hostname of the service node as known by the Management Node.',
   nameserver => 'Do we set up DNS on this service node? Valid values:yes or 1, no or 0.',
-  dhcpserver => 'Do we set up DHCP on this service node? Valid values:yes or 1, no or 0.',
-  tftpserver => 'Do we set up TFTP on this service node? Valid values:yes or 1, no or 0.',
-  nfsserver => 'Do we set up file services (HTTP,FTP,or NFS) on this service node? Valid values:yes or 1, no or 0.',
-  conserver => 'Do we set up Conserver on this service node? Valid values:yes or 1, no or 0.',
+  dhcpserver => 'Do we set up DHCP on this service node? Not supported on AIX. Valid values:yes or 1, no or 0.',
+  tftpserver => 'Do we set up TFTP on this service node? Not supported on AIX. Valid values:yes or 1, no or 0.',
+  nfsserver => 'Do we set up file services (HTTP,FTP,or NFS) on this service node? For AIX will only setup NFS, not HTTP or FTP. Valid values:yes or 1, no or 0.',
+  conserver => 'Do we set up Conserver on this service node? Not supported on AIX. Valid values:yes or 1, no or 0.',
   monserver => 'Is this a monitoring event collection point? Valid values:yes or 1, no or 0.',
-  ldapserver => 'Do we set up ldap caching proxy on this service node? Valid values:yes or 1, no or 0.',
-  ntpserver => 'Not used presently. Do we set up a ntp server on this service node? Valid values:yes or 1, no or 0.',
-  ftpserver => 'Do we set up a ftp server on this service node? Valid values:yes or 1, no or 0.',
-  nimserver => 'Do we set up a NIM server on this service node? Valid values:yes or 1, no or 0.',
+  ldapserver => 'Do we set up ldap caching proxy on this service node? Not supported on AIX.  Valid values:yes or 1, no or 0.',
+  ntpserver => 'Not used. Use setupntp postscript.  Do we set up a ntp server on this service node? Valid values:yes or 1, no or 0.',
+  ftpserver => 'Do we set up a ftp server on this service node? Not supported on AIX Valid values:yes or 1, no or 0.',
+  nimserver => 'Not used. Do we set up a NIM server on this service node? Valid values:yes or 1, no or 0.',
   ipforward => 'Do we set up ip forwarding on this service node? Valid values:yes or 1, no or 0.',
 
      comments => 'Any user-written notes.',