Finding steady state and Problem of rank condition

[DJINKPO]

Hello!
I ran my model and I got the expected outcome but unfortunately with the error message below:
Warning: Matrix is close to singular or badly scaled.
Results may be inaccurate. RCOND = 4.238587e-064.
> In evaluate_steady_state at 76
In resol at 108
In check at 71
In Gambia at 253
In dynare at 120
How can I solve this problem and get the best result?
Adding one more equation to my model, I got this message:
Warning: Matrix is close to singular or badly scaled.
Results may be inaccurate. RCOND = 1.179317e-063.
> In evaluate_steady_state at 76
In resol at 108
In stoch_simul at 76
In Gambia at 284
In dynare at 120
??? Error using ==> print_info at 43
Blanchard Kahn conditions are not satisfied: indeterminacy

Error in ==> stoch_simul at 81
print_info(info, options_.noprint);

Error in ==> Gambia at 284
info = stoch_simul(var_list_);

Error in ==> dynare at 120
[/b][/i]evalin('base',fname) ;
and the program couldn't run. I mean I did not get the expected outcome. I hope this may come from the initial value for the endogenous and exogenous variables.
How best can I find the steady state that satisfies the rank condition?
Thanks