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Create a Sub-task and Link to Parent Issue in Jira


This script creates a sub-task in Jira with the minimum fields required, then automatically links the sub-task to a specified parent issue.


I want to split my team's workload into smaller chunks using sub-tasks; however, it is very time-consuming to do this manually. To save time, I can use this snippet to create sub-tasks of issues and automatically link these to the parent issue.

Good to Know

  • If the specified reporter does not exist, the logger in user shall be assigned as reporter.
  • If the specified priority does not exist, the default priority shall be assigned.


  • Jira Jira (8.0 - 8.14)
  • ScriptRunner for Jira ScriptRunner for Jira (6.18.0)
import com.atlassian.jira.component.ComponentAccessor import com.atlassian.jira.issue.fields.config.manager.PrioritySchemeManager // the issue key of the parent issue final parentIssueKey = 'JRA-1' // the issue type for the new issue - should be of type subtask final issueTypeName = 'Sub-task' // user with that user key will be the reporter of the issue final reporterKey = 'auser' // the summary of the new issue final summary = 'Groovy Friday' // the priority of the new issue final priorityName = 'Major' def issueService = ComponentAccessor.issueService def constantsManager = ComponentAccessor.constantsManager def loggedInUser = ComponentAccessor.jiraAuthenticationContext.loggedInUser def prioritySchemeManager = ComponentAccessor.getComponent(PrioritySchemeManager) def parentIssue = ComponentAccessor.issueManager.getIssueByCurrentKey(parentIssueKey) assert parentIssue : "Could not find parent issue with key $parentIssueKey" def subtaskIssueTypes = constantsManager.allIssueTypeObjects.findAll { it.subTask } def subTaskIssueType = subtaskIssueTypes.findByName(issueTypeName) assert subTaskIssueType : "Could not find subtask issue type with name $issueTypeName. Avaliable subtask issue types are ${subtaskIssueTypes*.name.join(", ")}" // if we cannot find user with the specified key or this is null, then set as a reporter the logged in user def reporter = ComponentAccessor.userManager.getUserByKey(reporterKey) ?: loggedInUser // if we cannot find the priority with the given name or if this is null, then set the default priority def priorityId = constantsManager.priorities.findByName(priorityName)?.id ?: prioritySchemeManager.getDefaultOption(parentIssue) def issueInputParameters = issueService.newIssueInputParameters().with { setProjectId( setIssueTypeId( setReporterId(reporter.username) setSummary(summary) setPriorityId(priorityId) } def validationResult = issueService.validateSubTaskCreate(loggedInUser,, issueInputParameters) assert validationResult.valid : validationResult.errorCollection def issueResult = issueService.create(loggedInUser, validationResult) assert issueResult.valid : issueResult.errorCollection def subtask = issueResult.issue ComponentAccessor.subTaskManager.createSubTaskIssueLink(parentIssue, subtask, loggedInUser)
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