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Backbone issue Sync for Jira is a addon that is used to connect Jira systems via HTTPS, email, and file transfer, and automatically sync issue data. 
This addons makes Cross-company collaboration simple.
Configuration of this addon and error handling is done by a Jira Administrator.
Documentation for this addon is supplied by the vendor: K15t-Backbone Server and Data Center.

The Jira Project name in both instances is similar: Yamaha Motor Next Stage project (YNS)

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Big Picture addon is used for planning and managing  Yamaha Portfolio Board (YPM) Programme's and Projects and YNS EU Rollout Projects  (SAP, Informatica implemenation).

Documentation for Big Picture is supplied by the vendor: About Big Picture 

In Big Picture PROG-13 is used for YNS Project overview.

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