I found this kind of lines in the server.log of my Extreme Management Center :
168087468 2018-09-10T13:21:10UTC Inventory Server.4.Event r.mercier Inventory Server 172.31.0.229 Archive Save Archive Save Capacity Planning: (172.31.0.229) Version Stamp: Sep 10, 2018 3:15:00 PM - Warning - The ability to archive configuration files for this device has been disabled. :I checked the gtacknoledge site :
https://gtacknowledge.extremenetworks.com/articles/Solution/Unable-to-archive-configuration-error-Th...
On my server, this device is set on script for both firmware and configuration download MIB.
This device is a stack of summit x440. And configuration archiving works well.
Could this be a license restriction ?