Technical Tip: Unable to Authorize FortiSwitch, with the error: 'The following devices could not be authorized'

[kajlasunil]

Description	This article details the reasons a FortiSwitch might not be authorized when connected to a FortiGate.
Scope	FortiOS.
Solution	An issue may occur where FortiGate is unable to authorize the FortiSwitch, as shown below. When trying to authorize it in the CLI, the following error is seen. MSFirewall # config switch-controller managed-switch MSFirewall (managed-switch) # edit S148FPTFxxxxxx MSFirewall (S148FPTFxxxxxx) # set sn "S148FPTFxxxxxx" MSFirewall (S148FPTFxxxxxx) # set fsw-wan1-admin enable MSFirewall (S148FPTFxxxxxx) # end Create default vlan for vdom root failed object set operator error, -7 discard the setting Command fail. Return code -7 Solution: This error occurs when an interface with VLAN ID 1 already exists under the FortiLink interface on the FortiGate. To resolve the issue, change the native VLAN ID from 1 to another VLAN ID or delete the existing VLAN ID 1 from the FortiLink, and then attempt to authorize the switch.