API OATH2.0 Client authentication failed

As mentioned before, I didn’t see anything concise in the wiki, unfortanuatly. When clicking around the github I posted earlier I found:

If you have to have FreePBX REST, maybe look around there for answers?

Depending on what you want to do, maybe the Asterisk Rest Interface is an option?

https://wiki.asterisk.org/wiki/display/AST/Asterisk+13+ARI