Define Related list values for Opportunity in ZIssue
When viewing Issue details in the context of any object, the Issue Detail page will also display summary information associated with all the Salesforce objects with which the Issue is related (either created from or linked to).
These Issue-related objects are displayed at the bottom of the Issue Detail.
For each object, the field values to display in the Issue Detail Page may be configured, as shown below for Opportunity and Case.