Like in the previous Pokémon games, your path may get stuck by obstacles.
However unlike in the main games, you have to call upon one of the Wild Pokémon you have befriended such as Quilava, Torchic, Minun etc. Select what you want to do...
...and your Pokémon friend would do it such as burning hay that is in your way or making a path in water. You can only do this once, once the Pokemon uses its power to help remove an object it will leave.
Nearby Humans may give you rewards for doing this aswell as it being vital to progress through the game

 
All Content is ©Copyright of Serebii.net 1999-2014.
Pokémon And All Respective Names are Trademark & © of Nintendo 1996-2014