Limitation on Panorama (license) used by VM-series

[SeanDeHarris]

Hello experts,

Not sure this should belong to Panorama or VM-series, 

We have a Panorama for log collection already for on-perm ngfw.
Planning to purchase more ngfw firewall for AWS and Azure with BYOL (NGFW credits)

1) is there any limitation (e.g max number of Gateway managed) if we also purchase the credits for panorama (for mgt and logs) ?  

2) if we already have panorama lic (as long as the max number of gateway does not exceed), do i need to purchase the credit for panorama (to collect logs) when we purchase for credit for ngfw? 

thanks

sdg

Panorama VM-Series