Hi,
you may consult the below licensing guide to get mode details about licenses
https://www.juniper.net/documentation/en_US/release-independent/licensing/information-products/pathway-pages/licensing.pdf
from that i could find from it
S-LSSL-64-UPG:
Link Services Software Upgrade License—from 4 to 64 ML bundles per Chassis for AS PIC, Multiservices PIC, and Multiservices DPC
S-MONITOR-1M:
Software License for Passive Monitoring-- Flow Monitor Application, supporting 1M flows. Chassis based license for Multiservices PIC
If this solves your problem, please mark this post as "Accepted Solution."