Etsy power sellers are keenly aware that Etsy does not have the ability to set variation skus for their listings with product variations. Etsy only allows creating a product listing with a list of multiple variations. For example, you have a listing of a red sweater with SKU 'ABC' with three sizing options (small, medium, large).
Regardless of which variation is sold, Etsy will provide the 'SKU' and size attribute. So when a product is sold, the information provided for the order will be something like "SKU 'red-sweater', small". Since a unique variation sku is not available, most inventory management solutions cannot keep track of the inventory.
With ShipStation, Finale provides an innovative solution to keep track of your variation. Finale will concatenate the SKU and the product attribute to create unique marketplace skus. As a result,
SKU 'red-sweater', small become 'red-sweater-small'
SKU 'red-sweater', medium become 'red-sweater-medium'
SKU 'red-sweater', large become 'red-sweater-large'
To set this configuration, please goto the "edit task configuration from the Action menu from the "Pull Sales to Finale" operation of the ShipStation connection.