I have found when placing a server (factory), a few criteria must be met:
-Must be near the surface and above the ground, but can be underwater I believe.
-Can't be too close to other servers.
-Can't be re-sized or renamed, but can be rotated.
-No more than one server per user can be rezzed at a time regardless of region.
-To produce things, it has to be in a GM region marked for RP. Having a meter server in the region isn't good enough, people have to play there.
It is frustrating because one receives only an error saying basically that "something bad happened."
Hope the is helpful,