Currently exactly the same version of .net core as defined in the global.json is required.
The roll-forward policy to use when selecting an SDK version, either as a fallback when a specific SDK version is missing or as a directive to use a higher version.
Currently exactly the same version of .net core as defined in the global.json is required.
https://docs.microsoft.com/en-us/dotnet/core/tools/global-json?tabs=netcore3x#rollforward
With, for example,
rollforward = feature
those who have newer version of SDK than one that is specified will be able to load project without error.