The following guide explains how to give a product more than one SKU for a selling channel.
This feature is available in the Professional, Premium and Enterprise subscriptions of One Stop Order Processing.
Each product in One Stop Order Processing can now have up to 200 different SKUs for a single product. This can be useful to manage stock control for a product that is sold on different websites using different SKUs. Each of the 200 SKUs can be from any of the order types. For example, if you have the same product sold on the same Ebay site under 5 different SKUs you can add them to the list.
The new SKU order type tab is shown below:
For more information use the following link: