What are the cases where a TX is not sent to the Notary Service?

Question

What are the situations a transaction is not submitted to the Notary service? Although the progress tracker shows notary steps, we noted in some cases the transaction is not

Answer 1

As of Corda 3.3, if Tx has no inputs and no time window then it's not sent to the notary for signature.

But with Corda 4, as I can see in the master, in addition to the above two conditions, it is sent to the notary, in case a reference state is present :

https://github.com/corda/corda/blob/838c99c6e48788a21f7ca25aaee4c04cffb980c9/core/src/main/kotlin/net/corda/core/flows/FinalityFlow.kt#L164