Your Motherboard's QVL List for the 5000 series RAM (Vermeer) should indicate if it supports ECC or not: https://www.gigabyte.com/Motherboard/X570-AORUS-MASTER-rev-11-12/support#support-doc
According to the above QVL List for your Motherboard for the Vermeer Processor only 3 RAM Part Numbers have been verified to work in ECC mode.
That doesn't mean that others not listed will also work in ECC Mode it just hasn't been tested by Gigabyte yet.
EDIT: I suggest you look for another motherboard that support more ECC Ram.
This Asus Pro WS X570-ACE (Workstation Motherboard) supports ECC RAM: https://www.asus.com/Motherboards-Components/Motherboards/Workstation/Pro-WS-X570-ACE/HelpDesk_QVL/
This is Asus QVL List for ECC Memory for the above motherboard:
ASRock has several WorkStation Motherboards that support ECC RAM Memory: https://www.asrockrack.com/support/supportlist.asp?cat=RAM