Hello,
Thank you so much for posting here.
/forestprep
You must run this command on the domain controller that holds the schema operations master role (also known as flexible single master operations or FSMO) for the forest.
/domainprep
You must run this command on the domain controller that holds the infrastructure operations master role for the domain.
/domainprep /gpprep
You must run this command on the infrastructure master for the domain.
/rodcprep
It contacts the infrastructure master in each domain to update the permissions. You need to run this command only once in the forest.
Reference: https://video2.skills-academy.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc731728(v=ws.11)
Best regards,
Hannah Xiong
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