Get Advanced Settings
GET {{baseUrl}}/rest/api/3/application-properties/advanced-settings
Returns the application properties that are accessible on the Advanced Settings page. To navigate to the Advanced Settings page in Jira, choose the Jira icon > Jira settings > System, General Configuration and then click Advanced Settings (in the upper right).
Permissions required: Administer Jira global permission.
RESPONSES
status: OK
[{"id":"jira.home","key":"jira.home","value":"/var/jira/jira-home","name":"jira.home","desc":"Jira home directory","type":"string","defaultValue":""},{"id":"jira.clone.prefix","key":"jira.clone.prefix","value":"CLONE -","name":"The prefix added to the Summary field of cloned issues","type":"string","defaultValue":"CLONE -"}]