Auto Increment of LineItem

Summary:

hi Everyone, Is it possible to load data using "All data types with auto-increment of line item" feature in data exchange for the below data set? the Line Item column belongs to Plan element dimension and I dont want to update that column manually, it must get loaded uniquely with each unique Account,entity,Dimension 1, Dimension 5 member and Expense Description, here " Expense Description" is just a text field, which will get loaded to an "enter comments" member in the scenario dimension, once the data with line items are loaded.

Entity	Account	Dimension 1	Dimension 5	Line Item	Year	Expense Description	Jan