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Hi Many thanks for this reply and for the link. Indeed, when I removed one variable, for example Q1, the model converged. After removing Q2 and bringing back Q1, the model converged too. As you mentioned there are probably some correlation within the data I need to sort out. So I will have a careful...

Dear all, I am R user, but however new to multilevel models and to MLwiN I am running a two-level model with Community (level-2) and Farmer (level-1). I have 11 variables at level-1 unit and 6 at level-2: in total, 3 quantitative variables and 14 factors. The dependent variable (Y) is a binary varia...