There was a known bug in the earlier release of PBCS in which users were unable to drill from a Data Form that was based on an ASO plan type. Seek to try your drill through for Smart View.
As always you can go ahead and log an Oracle SR to see the status of the bug.
see prior post
Yes i get the same blank page from the Smart View as well from Data Form. Sure will raise a SR too.
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A similar question was raised recently on the forum and the issue was that the drill through from a Data Form ASO was still existent. Notbaly the OP was able to drill from Smart view and FR fine.
The belief is at the Target application screen you have the dimension setup similar to what a planning bso would be(e.g scenario set to scenario and not generic etc)
Uhh made some changes as stated in the doc, Drill Through From ASO Essbase Application To ERPi Returns Blank ERPi Landing Page (Doc ID 1561950.1) and its working in the smart-view. But still can't able to get tit working from the workspace. Gives the error,
The same error for the BSO which was working till yesterday. My dear cloud .........
As per first post there was a known issue of being unable to drill from ASO plan types via Data Forms. You should certainly confirm via the Oracle SR you sought to open whether that bug still exist.
In terms of why the BSO error is now occurring certainly you may want to have your pod instance restarted, reload some data via Data Management and try once again from the BSO.
The general belief is you are using one of the supported browser (e.g IE11 or Firefox ESR 45).
Good luck and let us know how you end up.