Most likely the field extraction is defined only in some other app, and the Sideview Report builder is also by default available only in the Sideview Utils app.
If that's the case you have two solutions --
1) globally export all the config for the field extractions and fields and lookups that you want to be able to use in the Sideview Report Builder. This might be just one field extraction or it might be quite a lot of different types of things.
OR
2) export the Report Builder view to the system level. This will make it appear in the app navigation of many apps of course, and since many would find this disruptive we don't ship it exported like that.
From the Sideview Utils homepage, click "settings" in the top right, then go to "Settings > User Interface > Views" (If you're in 5.X or earlier, you want "Manager > User Interface > Views")
Then find the "sv_report" view in the table and click the "permissions" link. Then set the radio button to "All apps" and submit.
NOTES:
do not touch any view called "report". As of several Sideview Utils versions ago the Sideview "report" view was renamed to "sv_report" to avoid collisions with a new view in Splunk 6 that is also called "report".
And it goes without saying that you should be on the latest Sideview Utils. The latest is 3.2, released just this week, and as it happens contains an improvement that can greatly speed up the rendering of the pulldowns in the Report Builder. 😃
Get the latest Sideview Utils for free from: http://www.sideviewapps.com/apps/sideview_utils
