Xero - inventory advice needed

[UK Printed Mugs]

Well we decided to ditch current accounts software to head down the Xero route but having a little trouble when reconciling bank statement. Basically there doesn't appear to be a way to allocate a payment to a "Stock/Inventory" asset when reconciling. Obviously I am missing something. I don't think we really need to have different entries such as "Stock - Mugs", "Stock - Coasters", "Stock - Mouse Mats" but merely "Stock or Inventory". So when a payment comes in (probably from eBay or online supplier payment that doesn't have an invoice) what do we do please?