Salesforce Authentication Failing

Question

I am trying to use OAuth authentication to get the Salesforce Authentication Token, so I referred wiki docs, but after getting authorization code, when I make a Post request

Answer 1

You can call your APEX controller using Postman if you enter the Consumer Key and Consumer Secret in the Access Token settings - you don't need the Security Token for this.

Set up the Authorization like this screenshot...

Postman OAuth 2.0

And enter your credentials on the window after hitting the Get New Access Token button...

Get Access Token

Then hit the Request Token button to generate a token, then hit the Use Token button and it will populate the Access Token field on the Authorization tab where you hit the Get New Access Token button.