Create automation rule dependencies of subtasks by date

[Brian Alexander]

I am working on an automation rule when Subtask A's Due Date is changed, then Subtask B's Calculated Start Date is updated. They are linked with A "blocks" B.

They are in the same project and I have tried using ChatGPT to work through the JSON file to no avail. It seems like the conditions are not being met which then does not trigger the rule.

1) Trigger

When an issue’s Due date field changes.

2) Top-level conditions (must all be true on the triggering issue = Sub-task A)

For the triggering issue ({{triggerIssue}}):

1. It is a sub-task:

   • JQL condition: issuetype in subTaskIssueTypes()

     automation-rule-019b2e92-6d08-7…

2. Due date is not empty

   automation-rule-019b2e92-6d08-7…

3. The issue has at least one linked issue with link type blocks

   automation-rule-019b2e92-6d08-7…

If any of these fail, the rule stops.

3) Branch to linked issues (“blocks”)

For each issue that the triggering issue blocks:

• Set the branch context {{issue}} to that blocked issue (this is Sub-task B).

4) Branch-level guard (runs on Sub-task B)

Only continue if Sub-task B’s current Calculated Start Date is different from the new calculated value:

• If:

  • {{issue.customfield_12256}} != {{triggerIssue.duedate.plusBusinessDays(1)}}

5) Update action (runs on Sub-task B)

Edit Sub-task B:

• Set Calculated Start Date = {{triggerIssue.duedate.plusBusinessDays(1)}}

[Trudy Claspill]

Hello @Brian Alexander 

Welcome to the Atlassian community.

I wrote an article on this topic which you may find useful:

Updating dependent task's dates when predecessor task date changes 

[Akhand Pratap Singh]

Hi @Brian Alexander ,

Good Day, Welcome to Atlassian Community

Please see attached Automation rule, that updates Start Date of Subtask B when Due sate of Subtask A is updated provided they are linked together.