VCF Business console under License Management > License, alerts about an issue for one or more license, though the status being 'Active'. Under License Details (click on alerted license to navigate to License Details), in the License Issues section, the message reads as "Your subscription (ID) has expired, reducing the allocated capacity by #### cores. Purchase a new subscription or allocate more cores to restore the allocated capacity".
VCF 9.x
When the split license is expired, the parent license shows an alert about subscription being 'Inactive' or 'expired'.