[Multiplayer] How many solids does a map need?

[sk0r]

Hi there.

I have made a map for AssaultCube and want to play it in multiplayer. But the server refuses to load the map with an output message "There is a big open area in this (hint: use more solid walls)".

My question is: How many solids do I need that the server accepts the map for multiplayer mode? I could not find anything related in the documentation.

If you need further information please post it.

Thanks in advance.