In order to import bulk data from a spreadsheet, the Data Tool
needs to make some assumptions.
The SKU
(version code) for every item must be unique. You cannot have two
items in Kartris with the same SKU; if Kartris finds duplicate SKUs,
it will either ignore or replace the existing item with the same SKU
(depending on settings).
All products must
have unique names, because products don't have any SKU (these belong
to versions). It is possible to have a product with multiple versions,
therefore each line in this case will repeat the product name, but
have a different SKU and version name. The Data Tool will assume that
any row with a repeated product name is the same
product.
All
categories must have unique names - the reasoning is similar to the
point above regarding products.
Because of the reasons given above, at present the Data Tool
cannot handle cases where multiple products have the same name, or
where a products and/or categories have multiple
parents.