In vSphere Web Client under Networking & Security > Installation > Service Deployments, the DSVA installation status indicates "Failed" and the NSX license is the free tier - NSX for vShield Endpoint.
When clicking "Failed", you see the following message:
"Following service(s) need to be installed successfully for Service Trend Micro Deep Security to function: VMware Network Fabric"
Check your NSX license if it is NSX for vShield Endpoint.
You can safely ignore the alert and force the DSVA deployment by clicking Failed and then Resolve.
For further information, refer to this KB article, Compatibility issue between Deep Security and NSX 6.2.3 (or higher).