The step of setting up a connection from postman to Xero development program.
 
 
-1	Import the Xero OAuth 2.0 collection and Xero environment into Postman.
 
	-1a Click "Run in postman" in this webpage. https://developer.xero.com/documentation/sdks-and-tools/tools/postman/
	-1b Choose Workspace.

-2	Create an OAuth2 app on https://developer.xero.com/app/manage/
 
	-2a Add new App name. Select "Web app" from Integration type.
	-2b Add Company or application URL ex: https://myapp.com
	-2c Add Redirect URI ex: https://myapp.com
	-2d Click "Create app".
	-2e Click Configuration from the left hand side of the screen
	-2f Click Generate a secret
	-2g Keep the page open
-3	Add your first set of environment variables in Postman.
 
	-3a On the right above, make sure to select the "OAuth 2.0" environment.
	-3b Copy the Client id, Client secret and OAuth 2.0 redirect URI from the My Apps screen into the environment variables in Postman.
	-3c Set the scope and add a state in the environment. 
		Scope: offline_access accounting.transactions openid profile email accounting.contacts accounting.settings
		State: 123
	Make sure to save it once you fill out.
-4 Generate an accessToken.
 
	-4a Click on the GET Get Started request under the Xero OAuth 2.0 Collection.
	-4b Click the "Authorization" and Edit "Configure new token" .
	-4c Fill out "Token Name", "Callback URL", "Auth URL", "AccessToken URL", "Client ID", "Client Secret", "Scope",and "State"
		Token Name: You can set the token name. 
		Callback URL: Redirect URL which is set in a postman. 
		AuthURL : https://login.xero.com/identity/connect/authorize
		AccessTokenURL: https://identity.xero.com/connect/token
		Client ID, Client Secret, Scope, State: Copy and paste from the environment.
	-4d Click "Get New Access Token".
	-4e Login your Xero account.
 
-5 Set the AccessToken.
 
	-5a Highlight the Access Token
		Right-click on it
		Select Set: OAuth 2.0 > access_token
		Scroll down the Manage Access Tokens pop up and follow a similar process for the Refresh Token:
 
	-5b Highlight the Refresh Token
		Right-click on it
		Select Set: OAuth 2.0 > refresh_token
-6 Find out which tenants (organisations) we are connected to
	-6a Click on the GET Connections request
	-6b Click Send (If this results in an error you may need to run the Token Refresh call first)
	-6c Like we did for the Access and Refresh Tokens, highlight the tenantId from the response, right click and select Set > OAuth 2.0 > xero-tenant-id
 
-7 Make your first API call!
	-7a Click to load the GET Invoices request
	-7b Ensure No Auth is set on the Authorization tab
	-7c	Click Send	
-8 Refreshing the token
	-8a Click to load the POST Refresh token request
	-8b Ensure No Auth is set on the Authorization tab
	-8c Click Send
 
 
The step of setting up a custom connection.
 
-1 Import the Custom Connections collection and Xero environment into Postman.
 
	-1a Click "Run in postman" for a custom connection this webpage. https://developer.xero.com/documentation/sdks-and-tools/tools/postman/
	-1b Click "Fork Collection".
	-1c Add "Fork Label" and "Workspace".
	-1d Click "Fork Collection".
 
-2 Create a Custom Connection.
	-2a Login https://developer.xero.com/app/manage.
	-2b Click "New app" on right above.
	-2c Set an App name, select a "Custom connection", set "Company or application URL".
	-2d Click "Create app".
	-2e Select the scopes your integration needs ex: accounting.transactions, accounting.setting, accounting.contacts.
	-2f Select yourself as the user that will authorise the custom connection.
	-2g Click Save and Connect.
	-2h Check your email, then, Click "connect" on the email.
	-2i Select "Demo Company", Click "Allow Access".
	-2j Back to a configuration tab in https://developer.xero.com.
 
-3 Set up your environment variables in Postman.
	-3a Copy the client id and client secret from the configuration tab into the environment variables in Postman.
	Make sure you select the environment which you just created.
	-3b Add a Scopes, which is the same as the one you set in https://developer.xero.com/app/manage in the enviroment.
 
-4 Make a AccessToken request!
 
	-4a Click on the POST Connections request
	-4b	Click Send	
-5 Make your first API call!
	-5a Click to load the GET Invoices request
	-5b	Click Send