Is message persistence offered?

When registering a program to the ISB, a developer can choose how long a message is allowed to live in an outbound queue on the ISB if it is not picked up. The data contained in some messages might only be relevant for short periods of time. This feature allows you to keep outdated communications from being received. This is especially important for machine-to-machine transactions, or time-sensitive data in which only the most recent data is needed.