"A Transfer In for stock item XXXXXXXXXX could not be made as there is insufficient stock of the component part YYYYYYYYYY"
Tradebox can be configured to recognise that the SKU in a downloaded order is a Bill of Materials (BOM) in Sage and, in this event, automatically transfer the component parts out of stock in Sage to make up the required number of BOMS. This feature is held within the Transaction Postings section of the sales channel and is called Process BOM Transfers.
The above error occurs where this feature is turned on but the transfer in Sage cannot be made due to insufficient stock of one or more of the component parts. To overcome this, you need to go into Sage and ensure that there is sufficient quantity in stock for the component parts that male up the BOM.