Error While replicating ECC DS TO HANA using BW server.

Hello Experts,

We have SLT installed on our BW server, in which we are using only financial DS(ECC DATASource) to modeling in BW.

In the same system we will be using few of the DS(Ex. 2LIS_13_VDITM), to replicate the same to HANA using DXC,

I have created the table which stored DXC data sources, and made the settings(Schema name, datasourcename &  table settings in BW),

But when i am trying to replicate the datasource(After maintaining the data in table which stores the DS names), i am getting the below error

Error in HANA DB system: Unable to modify DSO table '2LIS_13_VDITM': no key field defined (at least one of the defined columns m

Could any one please help.

Thanks & Regards,

Kishore