H3C CAS client import is failing with below error

Hi ,

Could you please help here am configuring the H3C CAS in my cell manager and getting the below exception.

[172:63] Failed to login to host 'hostname' .


Description:
Could not login to the host with the provided login credentials.


Actions:

1. Ensure that user on the backup host is present in the Data Protector UserList.
2. Ensure that the correct user credentials are provided.

Note: am able to login to the same H3C CAS host in browser with the same credentials.

Not sure what am missing..