Update OITW MinStock using DTW

Hello,

I want to update MinStock value in OITW table for an specific Warehouse.  My template it's something like this:

ParentKey   WarehouseCode     MinimalStock

ItemCode    WhsCode              MinStock

ABCDE      001                         100

FGHIJ        001                         300

But in I can't found how to do the Import from DTW.

I'm doing the following in DTW:

Import

Step 1: Selected Master Data

Step 2: Selected Update Existing Data

Step 3: Select Bussiness Object => Which object should I select?

I tried with Inventory / Item Master Data and then ItemWarehouseInfo in Step 4 but then in Step 5 I can't find a Target Field for ItemCode, just for WharehouseCode (selected automatically) and I have also MinStock available (didn't selected automatically).

Also tried Inventory / Item Management but I got an error "The object doesn't belong to Master Data" (I get the same error even I select different types of data in Step 1).

Can someone please tell me how to do this in DTW?

Thanks in advance.