Is Wholesaling in Indiana Legal?

Hey everyone, I'm trying to get my foot in the door with real estate and this week I let a wholesale deal slip out from underneath me without realizing until it was too late. The only reason I hadn't thought of it before was because I thought I read somewhere or heard somewhere that wholesaling in Indiana is illegal unless done a certain way. Would anyone be able to clarify on this or explain how it works in this state? 

Much appreciated for the responses!