2LIS_02 Setup

Hi experts,

I know this sounds really basic but its my first experience with PO datasources.

I have just installed these DS from RSA5.

I am trying to run a setup for PO (2LIS_02_HDR, ITM, SCL)

I understand the t-code is OL3BW.

But in LBWG which app comp to delete? '02' or '03'

LBWE says 02: Purchsing, we are using OLI3BW to run the setup.

Hence, I am unable to figure out which one to follow.

Is there any standard method to decide these parameters.

Please help

Thanks a lot

Priya