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Select More > Link to display the Link dialog box.
Ensure that the Jira Issue item is selected at the left of the dialog box and then choose the type of link to be created from the This issue drop-down list

Share a Service management (Servicedesk) issue 

When a licensed Jira Service Management user opens issue, the link differs from the public link used for the Customer Portal.
If the Licensed user wants to share a issue to a customer,  use the view customer request button, and then copy the link for sharing.

This link can only be retrieved in licensed mode:

Step-by-step guide

1. Open a Jira issue
2. Select at right column under Servicedesk request View Customer request
   Image Added
3.  A new page will be opened with a view of the request in the customer portal. 
   This link can be shared to a user. Note: to view the ticket the user must be linked in the ticket as reporter or participant or manager.

Link for licensed user: https://support.yamnet.com/browse/SD-7312   
Link for Customer: https://support.yamnet.com/servicedesk/customer/portal/1/SD-7312

Issue types

Standard Issue types

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