When I use Ameritrade and put account number and Doc Id or account number and Password this says
We couldn't find your TD Ameritrade account with the login information you entered
Type 'Scottrade' in the box on the page 'Choose your Bank or Brokerage' (screenshot).
On the next screen, enter your account number (screenshot).
Here's more info:
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Your Scottrade account number is now your TD Ameritrade username.
Unless you changed your username.
Yes they allow all numeric usernames.
This all happened a long time ago.
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