Hi Sudhansu,
you can check viewcluster BSPWDVC_CMP_EXT if a replacement of the view is already existing (perhaps deleted but entry in BSPWDVC_CMP_EXT was not deleted).
Furthermore you can check table BSP_WD_EXT_HIST. Here controller and replacement classes are saved. If the view is not enhanced no entry should exist (see https://service.sap.com/sap/support/notes/1702968).
You can also check https://service.sap.com/sap/support/notes/1889767 if it's relevant for you.
Best regards,
Claudia