[Q&A] Why does NetInventory fail for some devices but not for others?

[Cbpenn18]

Documentation & bug reporting acknowledgment

Yes, I read it

Describe your problem

I've had an issue for a while now with getting consistent results from NetDiscovery/NetInventory, but right now I'm trying to get an inventory of the devices that have successfully been discovered. These are all switches with SNMP properly configured. Some switches are being properly inventoried, but others fail with the following error,
"The agent is requesting a configuration that has already been sent to him by the server. It is more likely that the agent is subject to a critical error."
As seen below, one switch fails, the other succeeds:

Additionally, the switch that fails actually does have some data about the Network Ports:

I can manually run glpi-netinventory and I receive all of the data; why is GLPI giving this error and failing to import the data?