How to enable custom errors in Share point error

In share point while getting error we may see the correlation ID. But that is not really understandable i guess.
But we do have an option to enable custom error message which is understandable by anyone.

Here are the steps to enable that settings:

1. 15/Layouts folder we have a web.config file. In that file find Custom Errors and change its mode          as Off
    Ex: customErrors mode="Off"

2. Open your webapplication's web.config file.
     a) Find CallStack and change it's value as true
          Ex: CallStack="true"
     b) Find find Custom Errors and change its mode as Off
          Ex: customErrors mode="Off"
     c) Find debug and change its mode as true
          Ex: debug="true"

Once you finished these steps, hereafter you will get clean error message and you can solve it in your way..


thank you