Hello Vishall,
what is your exact goal here? Does your ECC system run already on a HANA system or is your HANA system a separate system not connected to the ECC system. In the first case your domain values are available in the DD07* tables avaiable in the "ABAP" schema of your HANA system. In the second case you need to get the required values from the tables in the way you need it (there are different options: export and import to HANA, direct access via SDA, ...).
Regards,
Florian