Some customers may subscribe to eBay Selling Manager, and with this, eBay auto-assigns each transaction a 'Sales Record Number'. At present, ChannelUnity only looks at the 'order ID' which is a concatenation of the Item ID and Transaction ID for single-item orders, and a unique string for multi-line orders.

An option could be added to Channel Settings so that subscribers to eBay Selling Manager can have CU use the 'Sales Record Number' assigned by this service.