Forest-wide information needs to be updated before the domain-wide information can be updated. User Action Log on to the ...

Forest-wide information needs to be updated before the domain-wide information can be updated.
[User Action] 
Log on to the schema master %1 for this forest, run the following command from the installation media to complete the forest update first: 
adprep.exe /forestprep
and then rerun adprep.exe /domainprep on infrastructure master again.