The VendorSKU is the unique code used by the vendor to identify a product. SellerCloud lets you save VendorSKU's from multiple vendors for a specific product and allows you to search products by the VendorSKU and also can print the VendorSKU's on a Purchase Order when submitting the order to the vendor.
VendorSKU's as well as VendorPrices can be imported from a tab delimited file. A sample import file can be downloaded below. The SKU column refers to SellerCloud ProductID, and for Vendor you can enter the Vendor's name. If the Vendor already exists in SellerCloud it will match it by name. IsDefaultVendorForProduct is set to 1 for true and 0 for false.
A list VendorSKU's for a product can be viewed by clicking 'Vendor Prices' from the product submenu. Also, if the product has a default vendor set, the vendor sku is visible on the product's purchasing page.