If you want to sum, you can do a SQL SELECT to get the sum and unique rows:
Select SKU, ITEM, COLOR, SUM(LOCATION1) AS LOCATION1, SUM(LOCATION2) AS LOCATION2, SUM(LOCATION3) AS LOCATION3 ;
From SKUTABLE ;
Group By SKU, ITEM, COLOR ;
Into Cursor QSKU

Note: I don't know what SKU is, but if this is a quantity, you can sum it too or something like that
After run the query, you can delete all records on SKUTABLE and append from the cursor.

Well just an Idea.
If this come from 2 or more tables, you can do a UNION in the SQL Select

Mauricio