Documentation
“Issue Details for Jira Customer Portal” is an add-on for Jira by Atlassian, created to allow users to show their customers more fields and details about their tickets in the customer portal.
Jira project admins can customize which fields will be displayed in their project’s customer portal tickets.
Example how additional fields will be shown in the customer portal ticket
Project Application Settings
Choose which fields to display in the customer portal tickets by dragging them from the “Atlassian Fields” column to the “Selected Fields” column, for example:
Assignee, Linked Issues, SLA