Delta with 2 fields from table EKBE

Hi,

I have created a customized datasource for table EKBE using function module as interface.

I want to make this datasource as delta enabled using field CPUDT and CPUTM. However, in RSO2, during datasource creation, in delta tab, I could only set delta with one field. How to set delta using more than one field ?

I have tried to search similar threads in forum, but failed to solve my problem.

Could you please share ?

Thanks.