Connect Data Services to SAP HANA

Hi all.

  I have a doubt about connection Data Serviece 4.0 to SAP HANA.

I've create a new schema in SAP HANA called DWH_DEV with associate user U_DWH_DEV.

Then I've created an DataStore in Data Services to connect at SAP HANA but when I try to connect with user U_DWH_DEV the data services crash.

If I connect with user SYSTEM it's work well.

I can't use a different user name? only SYSTEM user?

Thanks and best regards

Marco