What is a Rakuten SKU and where can it be found?

The Rakuten SKU can be found on Rakuten when you click on a listing. If you scroll down, you will see a specifications section. (See screen shot attached) 

This is the SKU number ecomdash makes a match on for listing and syncing to Rakuten. 

The Rakuten SKU is displayed on a Rakuten Listing as the "Base SKU"

The Rakuten SKU can also be found in the listing URL: 

Example: http://www.rakuten.com/prod/dazzle-gendry-ankle-boots/285721973.html

Rakuten SKU= 285721973