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Problem creating virtual interface

Problem creating virtual interface

(OP)
Hi,

I have a problem creating a virtual interface on a layer 3 switch.

I created the vlans:
set vlan create 10
set vlan create 20
set vlan name 10 vlan10
set vlan name 20 vlan20

I was able to enter interface configuration mode with comand "interface vlan 10" but when I try "Interface vlan 20" I get "Could not create virtual interface". If I try it the other way around like creating first 20 and the 10, it works for 20 but I get "Could not create virtual interface" for vlan 10.
At the moment there are several virtual interfaces on that switch.
Is there a limit for enterasys switches?
I attached a txt with the switch configuration.

Thank you.

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