When configuring SVS domain in L2 mode on 1000v which 3 are required?

The Packet VLAN is required to carry the actual data traffic (VM traffic) between the Virtual Ethernet Module (VEM) on the hypervisor and the Virtual Supervisor Module (VSM) on the Cisco Nexus 1000V.

'ttribute' is not a standard configuration parameter for an SVS domain; it appears to be a typo or an invalid option.

The Domain ID is a unique identifier assigned to the SVS domain to distinguish it from other domains, ensuring proper management and communication within the Nexus 1000V environment.

Port Profile is a logical construct that groups common configurations for virtual ports, but it is not one of the three required fundamental elements for the basic SVS domain itself in L2 mode; port profiles are applied to ports within the domain.

The Control VLAN is necessary for the communication of control plane traffic between the VEM and the VSM, which includes management messages, configuration updates, and heartbeats to maintain the operational state of the virtual switch.

Port group is a VMware vSphere construct that gets configured by the VSM via port profiles, but it is not a direct configuration requirement for the SVS domain in the context of the Nexus 1000V itself.