The PCID in KVRT Reports is generated from the information in the system

The PCID in KVRT Reports is generated based on what information in the system ？？

<Report>
    <Metadata Version="1" PCID="{A827D0BA-E7BF-DEAC-70F3-D8D20030442E}" LastModification="2021.09.08 15:10:47.195" />
    <EventBlocks>
        <Block0 Type="Scan" Processed ="8241" Found="1" Neutralized="0">
            <Event0 Action="Scan" Time="132755583713339237" Object="" Info="Started" />
            <Event1 Action="Detect" Time="132755586466811855" Object="D:\eicar.com\eicar.com.txt" Info="EICAR-Test-File" />
            <Event2 Action="Scan" Time="1327555864714​​89380" Object="" Info="Finished" />
            <Event3 Action="Select action" Time="1327555864714​​99316" Object="D:\eicar.com\eicar.com.txt" Info="Skip" />
        </Block0>
    </EventBlocks>
</Report>