Hi @dsc When orders are placed via Iceberg, all of them are lined up sequentially and sent to exchange for execution. Exchange accepts one order from a client at one time (in a sequence), until your existing order is placed with exchange, the next one will not be accepted, even if we send it to exchange - same will get rejected.
Trading systems are working fine and are super stable. I recently mentioned about order sequence here: Introducing Iceberg Orders: Now slice and execute large orders on Dhan - #48 by PravinJ