Authentication into the ETRADE environment requires a three step process: set
ETRADE credentials, generate request tokens to create a login URL, and use
the verification code to create access tokens. The verification code is
generated after successfully logging into the URL that comes from
etrd_auth_login_url
.
The access tokens expire each day at midnight Eastern Time. The next day Auth
step 1-3 will be required to get new access tokens. If two hours have elapsed
between API calls during a trading day, the access token is inactivated. Use
etrd_auth_manage_token
to refresh an inactivated access token.