VxRail REST API Fails to Change DNS

When setting new DNS servers via swagger receive a 400 bad request with return code E3100_VAL_90 Can not resolve the hostname <name of vxrail manager vm> with the provided DNS server <IP of new DNS server>

Is there another way to reconfigure the VXM DNS via console?

Our Esx, vcenter, and iDracs all are using the correct DNS already.

What would happen if the VxRail manager had no valid DNS servers to contact?