I encountered a similar problem with Gáwjám-Bastarnoz. The odd thing is that the Sauromatae AI can build an allied Government there and I can't. Given the excellent "Allied" recruitment options for Sauromatae in this region, I just wonder whether this is intentional. Now I know that the Crimean provinces and Bastarnolandam have "mixed" resources, but what then is the point of the Sauromatae only theoretically being able to recruit Germanic and Hellenic troops there?