OLD_LINK_NAME and NEW_LINK_NAME
What links?
Links mentioned in this article - https://confluence.atlassian.com/confkb/unable-to-locate-jira-server-for-this-macro-displayed-after-changing-jira-application-link-name-660966702.html
They are the old and new link names for your systems. I can't tell you what they are, they're your systems that you've moved from and to. You should at least be able to get the "new" one from your application links settings.
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