Sorry if there's an answer for this somewhere else. I really couldn't find it 
So, I am trying to configure SNMP monitoring in a host. I can snmpwalk from server to host (hostname is dif26), and the IP is configured correctly (I assume). When trying to add an SNMP template for that host, I get the following error:
Cannot update host
Details
Created: Application "Interfaces" on "dif26".
Updated: Application "General" on "dif26".
Created: Discovery rule "Network interfaces" on "dif26".
Created: Item prototype "Admin status of interface $1" on "dif26".
Created: Item prototype "Alias of interface $1" on "dif26".
Created: Item prototype "Description of interface $1" on "dif26".
Created: Item prototype "Inbound errors on interface $1" on "dif26".
Created: Item prototype "Incoming traffic on interface $1" on "dif26".
Created: Item prototype "Operational status of interface $1" on "dif26".
Created: Item prototype "Outbound errors on interface $1" on "dif26".
Created: Item prototype "Outgoing traffic on interface $1" on "dif26".
Two items ("Device name" and "Host name") cannot populate one host inventory field "Name", this would lead to a conflict.
The last line seems to be quite straightforward, but I just don't know how to resolve this. Any guesses on what I could change?

So, I am trying to configure SNMP monitoring in a host. I can snmpwalk from server to host (hostname is dif26), and the IP is configured correctly (I assume). When trying to add an SNMP template for that host, I get the following error:
Cannot update host
Details
Created: Application "Interfaces" on "dif26".
Updated: Application "General" on "dif26".
Created: Discovery rule "Network interfaces" on "dif26".
Created: Item prototype "Admin status of interface $1" on "dif26".
Created: Item prototype "Alias of interface $1" on "dif26".
Created: Item prototype "Description of interface $1" on "dif26".
Created: Item prototype "Inbound errors on interface $1" on "dif26".
Created: Item prototype "Incoming traffic on interface $1" on "dif26".
Created: Item prototype "Operational status of interface $1" on "dif26".
Created: Item prototype "Outbound errors on interface $1" on "dif26".
Created: Item prototype "Outgoing traffic on interface $1" on "dif26".
Two items ("Device name" and "Host name") cannot populate one host inventory field "Name", this would lead to a conflict.
The last line seems to be quite straightforward, but I just don't know how to resolve this. Any guesses on what I could change?
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