Hi Experts,
I've encountered an error while loading Master data. Below is the Complete scenario. Please any one answer my question?
SCENARIO:
1. We are required to Create a Master Data in EBI from the generic table maintained at ECC.
The table at ECC has following structure:
Customer | Sales org | Material Division | Segmentation
where Customer, Sales org and Material Division are primary keys. Segmentation is maintained at the level of customer/salesorg/matdiv.
2. We need to maintain the below data flow at EBI.
ECC --> PSA --> Staging DSO --> Transformation --> Master Data
3. The Master Data should have below structure:
Customer | Sales org | Material Division | Crop Year | Segmentation.
where Sales Org and Material Division are compound attributes
4. Create TVARC variable for maintaining CROP YEAR at DSO level. Crop year data won't be coming from ECC.
5. We need to show SEGMENTATION infoobject as Free char at existing Queries.
QUESTIONS:
1. I've Created a master data for Customer by adding Sales org , Mat div, Crop year, segmentation as navigational attributes.
and created Write Optimized DSO with Customer, Sales org, Mat div and Crop year as key fields and Segmentation as Data fields.
I've loaded the data till DSO but when i am loading master data , I am getting error with duplicate values. 
I understand the error because of duplicate customer values are being loaded to Master data. but
How to load data from DSO to Master data with 4 primary keys (Customer, Sales org, Mat div and Crop year) in master data?
Let me know if you need any information. This is URGENT. Please help me out to understand the concept and in rectifying the error.
Thanks,
Rohit 