When the destination system of my flow comes to unavailable, will I be notified of any error ?
Do you keep blocked / in transit message in your system eating for an action on my side ? If true how much time ?
there is an inbuilt repeater in DSYNC which will retry any unsuccessful messages 3 times with 1 minute delay. You can configure each job/connection to notify you about all successful and failed transactions. You can also view full history for each connection which holds the source and destination (remapped) data.