Getting invalid username or password when trying to authenticate as admin user

[adevegowda]

When we are trying to authenticate as the admin user (that was created as part of our initial setup) using this documentation, we get the error as shown below

curl -X POST "https://<baas_host_name>/management/token" -d '{"grant_type":"password", "username":<admin_username>, "password":<admin_password>}'

Error:

{"error_description":"invalid username or password","error":"invalid_grant"} 

We’ve verified that the username and password are correct (i.e. We can use this username/password to log in to the Edge/BaaS account), but we are still getting “invalid username or password”.

Can someone let me know why are we getting this error ?