my guess is that the the Item ID:
ID: SFS 200 Standard
is being stored in column in the order details table that is set to be numeric.
Double check the store order details server behavior on the confirm.php page, Make sure that the Database column that is bound to the Cart ID Column has the data type set to text, you will need to check this in the database itself to make sure that the item ID column in the order details table is a text column.