In the NSX UI, the Expiry Date for the VMware Cloud Foundation (cores) license appears as 'Not Available'.
When the following API is executed, the expiry value shows as -1.
GET https://{{nsx-ip}}/api/v1/licenses ... |
VMware NSX 9.0.2
It is expected behavior.
On the NSX UI, the expiration date is intentionally shown as 'Not Available'. An info button is provided to direct customers to the VCF Operations Console to check the license validity.