HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

Is there any information available about the possible settings for templates, or is there a way to retrieve it from the template itself?
I would like to implement a feature in the HD version where, upon selecting a template, unsupported settings are automatically disabled.
Otherwise, I haven't been able to figure out which settings are supported for some templates, even after trying everything, and the map doesn't generate.

Of course, the information is in the RMG. For convenient viewing of the RMG, you can use, for example, the Textdit utility by A_K_ZyZop. Although, for pre-setting, only the map size is probably needed, with its minimum and maximum values being the first ones, and they can be seen in any editor.

The values for the map sizes S, S+U, M, M+U, L, L+U, XL, XL+U are 1, 2, 4, 8, 9, 18, 16, 32, respectively.

The remaining generator settings can be set to default: 2 players, zeros for teams and computers, no water, strong monsters.