Cisco Rule

Any FTDv license can be used on any supported vCPU and memory configuration

Catalog row in Vendor License Rules · Cited

Kind: Virtualization
Statement: Cisco Secure Firewall Device Manager Configuration Guide, Version 7.4: Licensing the System (Firewall Threat Defense Virtual Licensing): "Any Firewall Threat Defense Virtual license can be used on any supported Firewall Threat Defense Virtual vCPU/memory configuration."
Applies when: Sizing a virtual firewall.
Applies to: Cisco Secure Firewall Threat Defense Virtual
Related metrics: Firewall Threat Defense Virtual performance tier