Inventory Management (Non-cumulative values)

Dear experts,

I want to extract inventory data from 2LIS_03_BF.

How do I have to configure the Key figures; for example: 0VALSTCKQTY. Is there a need to use Non-cumulative value with in- and outflow as in Content.

Which other possibilities exist?

After InfoObject config. - what are the exact next steps?

Do I load data from the 3 DataSources 2LIS_03_BX, 2LIS_03_BF and 2LIS_03_UM into one DSO first and then into one cube or do I have to split?

I dont want to use the BC data flow.

Thanks for your advice.

Patrick