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The field Attachments accepts many types of files in Jira Cloud and currently, it's not possible to restrict it to accept only one type or make it required to add one type of file and the other ones optional.
We have a feature request suggesting the implementation of this ability:
Please, click on vote and watch to receive updates about the feature.
Hi All! We’re excited to share the launch of an announcement banner that lets Jira site administrators communicate directly to their users across their Jira Cloud instance. ...
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