Sales Order line - item transaction missing

I created a sales order with 13 lines. All the lines are fine except two of them. Those two lines have qty of 1 per each on sales order line but there is no inventory transaction. The customer was charged with the sales amount but inventory was not reduces for those two items and I see no inventory transaction related to that sales order. When I go to invoice journal those two lines have contribution ratio of 100.

Thank you.