Get consignment totals

Returns the count and cost for the given consignment.

The consignment type can be SUPPLIER, OUTLET or RETURN (not STOCKTAKE).

The status of the consignment will determine which values make sense:

• If the consignment type is OUTLET the sent cost may not be accurate when the status is OPEN.
• If the consignment is OPEN or SENT the received count and cost should both be zero.
• For completely received consignments received cost should equal the sent cost and the received count should equal the sent count.
• For partially received consignments we would expect the received cost value to be less than sent cost value, and the received count to be less than the sent count.