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The Backbone sync link internally via EUYNS and YIS is not working as this refers to a local host. 
Due to firewall limitations it is not possible to go outside and inside of a Jira Instance in one query which is required for Backbone Issue Sync.
Workaround: Please type the Issue Key number in the Search of Jira YME to access the issue or click on the Partner Issue Key YME field if this is filled.

EUYNS-1546                                                                                                      YIS-12225

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Backbone sync errors

If any Sync error appears or if you have questions why an issue is not synced between any of the Jira instances or Jira YME EUYNS-YIS project please contact a Jira Administrator.

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