I tried to run the all nodes inventory report which is managed in NPM where most of my devices are CIsco and Juniper stack switches, in my estate i have around 12000 devices where most of them are stack switches but the overall nodes managed in NPM is 5000+ devices
however for Cisco i can click on the device and check for the stack column where i can find the serial number of other switches in stack. For juniper devices i am unable to find those details.
More over this needs to be reflected in Node inventory.
Request your support to get the whole inventory