Error: Could not generate a useable route, please check city pair or entered route

Error: Could not generate a useable route, please check city pair or entered route

Error:
Could not generate a useable route, please check city pair or entered route


Solution:
It is possible that there are not any valid routes from the city pair in the ARINCDirect Flight Planning
system. To check, open the Full Flight Plan option for the leg. Does this optimized route produce a
flight plan?