Is the supplication of a traveler always answered, or is its answer contingent upon traveling for the purpose of obedience?

Traveling is one of the general reasons for the acceptance of supplications, whether the travel is for an act of obedience or a permissible one. This is because travel often involves the breaking of the soul and enduring hardships, and it has been narrated in the Hadith that "the supplication of the traveler" is answered.