Forum Discussion
Windows Server for VMs
Is Windows Server 2019 Standard 16 Core Open Licence suitable to configure 5-10 VMs on 20 core hardware?
Technically it shouldn't be a problem as long as the hardware has enough resources for what you're wanting to do. The licensing aspect (assuming windows guests) should be taken up with your reseller's trained specialist or ask microsoft directly.
https://www.microsoft.com/en-us/about/officelocator/default.aspx
or email volume licensing service.