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Hi guys.Is there a way to update `refresh token`? According to docs it expires after one year so users will need to reconnect to use AuthorizeNet after this period.It is very inconveniently! How to avoid this?

I need sandbox credentials to add my application and behave on behalf of Merchant. According to https://developer.authorize.net/api/reference/features/oauth.html I should ask you for them. What I need to do to receive them? I would appreciate a quick...