Please check my answer on your repost :
https://answers.splunk.com/answers/701762/repost-please-can-anyone-help-help-search-depends.html?childToView=702919#answer-702919
Cheers,
David
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In the Splunk App for Stream, i.e. not the TA, access the Configuration->Configure Streams menu item from the navigation bar. Scroll down until you find the stream titled "netflow" and choose "edit". Then, in the resulting config screen, ensure that the Mode is set to "enabled". This will enable the stream as described above by @seg42
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