Branch, locale and company parameters usage for Authorization request to Acumatica

Hi,

For Acumatica authorization such request is used 

URL : https://ath.acumatica.com/entity/auth/login

Body ; 

                                             {"name" : "admin",

                                             "password" : "somePassword",

                                             "company" : "",

                                             "branch" : "",

                                             "locale" : "en-US"}

Sometimes company, branch, locale are obligatory, sometimes are optional.

When we use Oauth 2.0 authorization to Acumatica I do not see the usage of these parameters anywhere 

My question is : Does Oauth 2.0 require company, branch, locale for authorization ?

How Acumatica process these parameters for oauth2.0 ?