Validate an issue only if a comment is written during the transition

Use case

Evaluate comments and block transitions based on the outcome.

This use case is only valid for validators as it involves making changes during a transition. An additional error message can be added.

⚒️ Configuration

Jira expression*

 originalIssue.comments != issue.comments

The whole set of comments before the transition must be different from the set of comments during the transition.

Do not forget to add a screen to the same transition that contains the validator, otherwise it will always block the transition.

📚 Related use cases

Use case	Workflow function	Use case description
Block a transition based on issue links	Jira expression condition Jira expression validator	Evaluate issue links and hide transitions based on the outcome. This use case is valid for both conditions and validators. The only difference is that you can specify an additional error message when using a validator.
Block a transition based on sprint information	Jira expression condition Jira expression validator	Make sure that an issue is not in an active sprint. This use case is valid for both conditions and validators . The only difference is that you can specify an additional error message when using a validator.
Block a transition based on the day of the week	Jira expression condition Jira expression validator	Block transitions on weekends or any other day of the week. This use case is valid for both conditions and validators. The only difference is that you can specify an additional error message when using a validator.
Block a transition if a predefined field value has not been changed	Jira expression condition Jira expression validator Update fields	Evaluate a Date Picker field and block the transition if it has not been updated. This use case is valid for both conditions and validators. The only difference is that you can specify an additional error message when using a validator.
Block a transition if some issues under an epic are not in a certain status	Jira expression condition Jira expression validator	Check whether an epic has all issues under it in a certain status. This is particularly important if you want to block an epic as long as work is still being done on related sub-tasks. This use case is valid for both conditions and validators. The only difference is that you can specify an additional error message when using a validator.
Check current issue status	Jira expression condition Jira expression validator	Check whether the current issue is in a particular status. This use case is valid for both conditions and validators. The only difference is that you can specify an additional error message when using a validator.
Check for unresolved sub-tasks	Jira expression condition Jira expression validator	Check whether the current issue has any unresolved sub-tasks. This is particularly important if you want to block a parent issue as long as work is still being done on related sub-tasks. This use case is valid for both conditions and validators. The only difference is that you can specify an additional error message when using a validator.
Check if an attachment was added recently	Jira expression condition Jira expression validator	Make sure that the current user has uploaded a attachment during a definite period of time. This use case is valid for both conditions and validators. The only difference is that you can specify an additional error message when using a validator.
Check parent issue type	Jira expression condition Jira expression validator	Check whether the parent of the current issue is of a certain issue type. This is particularly important if you want to reuse a workflow for multiple sub-task issue types but only want a transition to be available if the sub-task belongs to a certain user story or a bug. This use case is valid for both conditions and validators. The only difference is that you can specify an additional error message when using a validator.
Check the number of times that a field has changed	Jira expression condition Jira expression validator	Check the number of times that a field has changed. This use case is valid for both conditions and validators. The only difference is that you can specify an additional error message when using a validator.
Check whether an attachment was added during the transition.	Jira expression condition Jira expression validator	Make sure that the current user has uploaded a attachment during the transition. This use case is valid for both conditions and validators. The only difference is that you can specify an additional error message when using a validator.
Evaluate the Parent field	Jira expression condition Jira expression validator	Evaluate different values of the issue in the Parent Link field of the transitioned issue. This use case is valid for both conditions and validators . The only difference is that you can specify an additional error message when using a validator.
Evaluate worklogs in sub-tasks	Jira expression condition Jira expression validator	Evaluate if work has been logged in a sub-task to prevent transitioning the parent issue when no work has been logged. This use case is valid for both conditions and validators. The only difference is that you can specify an additional error message when using a validator.
Validate an issue only if a comment is written during the transition	Jira expression validator	Evaluate the comments and block transitions based on the outcome. This use case is only valid for validators as it involves making changes during a transition. An additional error message can be added.
Validate worklogs	Jira expression condition Jira expression validator	Evaluate if a user has logged more than a certain amount of time in the latest worklog.