Option to lock the Deliver document

In the scheduling wizard, the option to lock the Deliver document is selected by default to prevent changes until the scheduled messaging run finishes. While the document remains locked, Deliver prevents changes to the Deliver document by preventing publication of new versions. If you clear this option, you can update and publish the document normally.

If you modify the document in the Message Editor while the document is locked, you can save the new version, but you cannot publish it. The changes are not available to the messaging until the lock is released and you publish the messaging again.

Deliver releases the lock after the scheduled messaging run completes.