How to select "Key column" in "Mining Structure" for Microsoft Analysis Services?

Question

data mining

Good afternoon!
There is a table of receipts of goods to the warehouse:
Transaction key (Code of receipt of goods),
Code of goods,
Cost of delivery,
Cost of sale.
In Microsoft Analysis Services, I'm trying to build a "Sales Cost" dependency on other parameters. Question: To create a "Mining Structure", is the Key Column a Product Code or a Transaction Code?
Sincerely,
Alexander

Answer 1

For Mining Structure Key Column this is a unique row identifier, in your case it is a transaction key