While you apply updates, the patchadd command logs information in the /var/sadm/patch/update-id/log file.
The patchadd command cannot apply an update under the following conditions:
The package is not fully installed on the system.
The update package’s architecture differs from the system’s architecture.
The update package’s version does not match the installed package’s version.
An update with the same base code and a higher revision number has already been applied.
An update that makes an applied update obsolete.
The update is incompatible with an update that has already been applied to the system.
The update being applied depends on another update that has not yet been applied.