How to create a subtask based on the summary of the parent where it will not create the subtask with the same summary using the app Create on Transition for Jira.

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  1. Log in as a Jira Administrator and click  > Projects.
  2. Select the required project and click Project Settings.
  3. Select the required workflow and click Edit to view the transitions associated with the workflow.
  4. Select a transition and click Post-Function from the box on the right. Details about the transition are displayed.
  5. Click Add post function. The Add Post Function To Transition screen appears.
  6. Select Create Sub-task from the list and click Add.
  7. Configure the below settings and click on Update.

  8. Publish the workflow before performing the transition. The sub-tasks are created only if the specified condition is met as shown:

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