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JIRA SERVER JIRA CLOUD

This article shows how to synchronize a Due Date field.

Source side

Incoming sync

To send the Due date use the code below  

replica.due = issue.due

Destination side  

Incoming sync

To apply the received Due Date value on your side add the code below

issue.due = replica.due

See also

How to sync created date field

How to synchronize Date/DateTime custom fields