Is there any API available to undelete/Restore RQM resource ?
One answer
As far as I know, data for deleted items are not preserved by the repository service.
Unless there is a special capability to archive and unarchive certain data, delete means delete and you can not get the data back.
You would have to create automation to get the data from a restored previous backup that still has the data and then import the data somehow into the production system. Note, this can become quite complex quite quickly.