Imported from previous forum
If you receive a ListStatusRequest or ListCancelRequest for an unknown ListID, my understanding is that you should send a ListStatus message with ListOrderStatus = Rejected with the Text indicating something like “Unknown List”. My question is what do you put in the NoOrders repeating group given that this is required repeating group? For an unknown ListID, there are no associated orders. It seems like this should be a conditionally required grouping that is required when ListOrderStatus != Rejected. I tried omitting the NoOrders group, but Quickfix rejects the message since the group is required. I guess I could try setting NoOrders = 0 and see if that works.