I experienced this issue when working on a particular platform, it was a weird one and took some trial and error to fix so thought I would document it.
When trying to view an NSX Resource Action item that had been provisioned it would just display a blank white page. Also if a day 2 action was attempted on the item a red ‘internal error’ box would be displayed and so the day 2 action wouldn’t load.
The fix was a couple stage process…
1. Go to the vRO Endpoint in vRA portal, test connectivity and save
2. In vRO Control Center
(a) Disable NSX Plugin
(b) Restart vRO Service
(c) Enable NSX Plugin
(d) Restart vRO Service
3. You may also need to Reboot vRO appliance too
After that you should find that you can view the provisioned NSX Resource Action item details and the day 2 actions will load again as normal.
I would be interested in hearing if anything else has experienced this issue (please write a comment). I would also be curious to hear if anyone has experienced and found the root cause?