This document explains that how you can successfully load data into BW in purchasing scenario. In this document, I am focusing on 0PUR_C01 cube but you can also relate it with other purchasing Infocubes i.e. Purchasing Groups and Vendor Evaluation.
STEP1:
Select relevant industry according to your scenario.

STEP2:
If its new system and its first time you are loading data extraction
1. Maintain NDI and BW as Active in TCode BF11. It is mandatory.


Step3:
Activate all data sources in LBWE.

Step4:
Delete setup tables of your application. You can find value help by pressing F4.

Step5:
Now fill setup table for purchasing.

Step6:
Make sure that TransfProc(BWVORG) and Appl. Comp.(BWAPPLNM) fields contain values. If these fields are empty then make sure that all settings/configurations have been performed on ECC Side.

Step7:
Execute ITM data source with "Initialize without data transfer" option.

Step8:
Execute ITM data source with "Full Update" option.

Step9:
Execute DTP for ITM data source with "Full" option.

Step10:
Execute SCL data source with "Initialize without data transfer" option.

Step11:
Execute SCL data source with "Full Update" option.

Step12:
Execute DTP for SCL data source with "Full" option.

Step13:
Now you can match your records with ECC Report "MC$i"