AccPac SKU

AccPac SKU is the Sage (ERP) system product id. 
Each product in Frans Magento is assigned an AccPac SKU. This helps integrate from Frans Magento to Sage and from Sage to Frans Magento 

AccPac SKU is unique per product ignoring ribbon color.

This is so that accpac sku can track inventory, including box sizes / box colors, but ribbon colors are not part of inventory tracking.
SO, for example these two would have the same accpac sku:

40pc Gray and Smoked Salt Caramel with Champagne Box / Red Ribbon
40pc Gray and Smoked Salt Caramel with Champagne Box / Champagne Ribbon