A user account is locked if invalid login credentials are provided after more than seven log in attempts. The user’s account password can be reset calling the GET /user/credentials/token API and then invoking the POST /user/credentials endpoint with the token returned by the first API call.
Please contact Yodlee to update the user status to active.
The POST /user/register API is restricted in the developer portal sandbox environment. Please use any of the five pre-registered users available on the API Dashboard page.