IBM Z Software Asset Management messages You can identify the type of message by the message prefix. HSIA - Automation Server messagesHSIC - Operation messagesThese messages are issued by the HSIC - Computation phase.HSII - REXX utility messagesThese messages are issued by the REXX utility.HSIT - Product tagging messagesThese messages are issued by the Product Tagger.HSIX - Inquisitor for z/OS UNIX messages and codesThese messages are issued by the Inquisitor for z/OS and UNIX.HSIZ - Usage Monitor messagesThese messages are issued by the Usage Monitor.