This type of read-only custom field has a value which is dynamically calculated from a custom math/time expression. It can be used to obtain a date-time value depending on the value of other fields in current issue or in any other issues (linked issues, sub-tasks, epics, stories, JQL selected issues, etc).
Configuration
Edit Math/Time Expression
Example: Date-Time of creation of an epic
Create a new Calculated Date-Time Field custom field called "Date-Time Creation of Epic"
Head over to Administration → Issues
→ Custom fields → Add custom Field → Advanced → Calculated Date-Time field (by JWT)
On the configuration screen of the newly created custom field go to Actions and click on Configure
Click on Edit Math/Time Expression
Configure the field by entering a math/time expression. Learn more about JWT expression parser. After the configuration click on Save
The math expression used in this example is: first(fieldValue({00009}, linkedIssues("has Epic")))
, where {00009}
is code for numeric value of Date and time of creation field.
Finally, the configuration of the new custom field should look like this:
If you still have questions, feel free to refer to our support team.