A short-lived channel access token is an access token for the Messaging API that is valid for 30 days.
You do not need to use short-lived channel access tokens that are issued using the /v2/oauth/accessToken
endpoint. Instead you can use a long-lived channel access token that is issued from the "Channel settings" page of the console. New long-lived tokens can be issued at any time from the console.
Short-lived tokens are only required for users using a LINE@ "Pro" plan or an official account.
Note: LINE@ "Pro" plans are only available in certain regions. For more information on the LINE@ plans available in your region, see LINE@ plans.
What is a short-lived channel access token?