Reject duplicated file names in attachments

Use case

This validation fails if a name was used multiple times for the issue's attachments.

⚒️ Configuration

Add the Logical validator to the desired workflow transition.

Expression

Add the following expression:

Bash

count(toStringList(%{issue.attachments})) = count(distinct(toStringList(%{issue.attachments})))

📷 Screenshots

📚 Related use cases

Use case	Workflow function	Parser functions	Label
Block a transition until all sub-tasks have certain fields populated	Logical validator Logical condition	count() filterByPredicate() subtasks()	STAFF PICK
Block an Epic's transition depending on linked issues status and due date	Logical validator Logical condition	count() filterByPredicate() linkedIssues()
Block an Epic's transition until all the issues under that Epic are resolved	Logical validator Logical condition	count() issuesUnderEpic() filterByResolution()
Ensure that all issues linked with a certain issue link type have "Due Date" field set	Logical validator Logical condition	count() linkedIssues() fieldValue()
Ensure that an issue has at least one attachment	Logical validator Logical condition		STAFF PICK
Evaluate Assets objects	Logical validator Logical condition	findPattern() findReplaceAll() replaceAll() toStringList()
Halt a transition if an element is not contained in a list	Logical validator Logical condition	toStringList()
Hide transition to a previous status	Logical condition
Make "Time spent" field required	Logical validator
Prevent a closed issue from being reopened after resting 1 week closed	Logical validator Logical condition	isInRole()
Prevent a transition depending of the number of components	Logical validator Logical condition	numberOfSelectedItems()
Prevent external users from creating issues	Logical validator	matches() toString() textOnStringList() toStringList() userDisplayName()
Prevent issue creation if description contains less than 100 characters	Logical validator	replaceAll() length()
Prevent issue creation with the same field value (Boolean)	Logical validator Validation based on JQL query	count() issuesFromJQL()
Prevent setting due dates outside business hours	Logical validator Logical condition	withinCalendar()	STAFF PICK
Prevent the creation of sub-tasks unless the parent issue is in a certain status	Logical validator
Reject duplicated file names in attachments	Logical validator Logical condition	count() toStringList() distinct()
Restrict issue creation per issue type and project role	Logical validator	isInRole()
Set a condition in a global transition which only applies in a certain status	Logical condition
Validate a Select List (cascading) custom field	Logical validator Logical condition
Validate only issue links created in transition screen	Logical validator	count() transitionLinkedIssues() filterByProject() filterByIssueType()
Validation based on the value of a date type project property	Logical validator Logical condition	stringToDate() projectProperty()