Solaris 10 Patch Return Code 1; what does it mean

I installed solaris 10 patch cluster on some nodes and I noticed quite a few error code 1 and 8. The error code 8 I'm not concerned. I am concerned about error code 1, useage error. What do they mean by usage error?

Patchadd error codes

           0       No error
           1       Usage error
           2       Attempt to apply a patch that's already been applied
           3       Effective UID is not root
           4       Attempt to save original files failed
           5       pkgadd failed
           6       Patch is obsoleted
           7       Invalid package directory
           8       Attempting to patch a package that is not installed
           9       Cannot access /usr/sbin/pkgadd \(client problem\)
           10      Package validation errors
           11      Error adding patch to root template
           12      Patch script terminated due to signal
           13      Symbolic link included in patch
           14      NOT USED
           15      The prepatch script had a return code other than 0.
           16      The postpatch script had a return code other than 0.
           17      Mismatch of the -d option between a previous patch install and the current one.
           18      Not enough space in the file systems that are targets of the patch.
           19      $SOFTINFO/INST_RELEASE file not found
           20      A direct instance patch was required but not found
           21      The required patches have not been installed on the manager
           22      A progressive instance patch was required but not found
           23      A restricted patch is already applied to the package
           24      An incompatible patch is applied
           25      A required patch is not applied
           26      The user specified backout data can't be found
           27      The relative directory supplied can't be found
           28      A pkginfo file is corrupt or missing
           29      Bad patch ID format
           30      Dryrun failure\(s\)
           31      Path given for -C option is invalid
           32      Must be running Solaris 2.6 or greater
           33      Bad formatted patch file or patch file not found
           34      Incorrect patch spool directory
           35      Later revision already installed
           36      Cannot create safe temporary directory
           37      Illegal backout directory specified

Thanks for the reply but I already have this info. What I want to know is, what is usage error mean?

maybe also run ksh -x installcluster script to see more debug info it produce and troubleshoot further from there.

please explain how you installed patches and where you get the patch cluster. also please give infos about the solaris version (cat /etc/release) and the kernel version before AND after patching (uname -a).