Link JIRA ticket numbers to existing Service Desk Ticket

Link JIRA ticket numbers to existing Service Desk Ticket

Hi all

I am interfacing SD with an external vendors JIRA ticket system.  I want to know how to avoid SD creating multiple ticket when they reply to ours.  (JIRA won't update their subject line so each reply from JIRA logs a new ticket.

It would be nice for SD to recognise the JIRA ticket number in the subject and map with an SD ticket number.

Any one done something similar?