When configuring L2 stretch in VMware Cloud Director Availability you will see the below error,
L2 VPN View and/or Configure rights are not enabled for the administrator of Organization '######' in Cloud Director
VMware Cloud Director Availability 4.7.x
VMware Cloud Director 10.6.x
This issue occurs when the user does not have the "L2 VPN Configure" role assigned.
To resolve this issue.
You can refer Configure L2 VPN in the VMware Cloud Director Service Provider Admin Portal