Blanchard-Kahn conditions

I am trying to run a stochastic model, but I keep getting an error message regarding the Blanchard-Kahn condition. Dynare is able to compute the steady state values, but not do anything else. After adding the “check;” command, dynare reports that

"There are 2 eigenvalue(s) larger than 1 in modulus
for 3 forward-looking variable(s)

The rank conditions ISN’T verified!"

Is this something that can fixed with my code or is there an issue with the way the model is set up?