@KannanCh2 The reason most likely is that there are no versions that exist to which the restore can happen. The restore basically helps to restore the state of the AEM resource to a specific version. If there are no versions then there is nothing the system can restore to.
@test1234567 Your options will be very limited i am afraid in that case. You can try using postman/curl to send a post request to update this property.
The access might be a challenge but you can try using the temporary access bearer token from the developer console.
@Julio_Baixauli You can create a simple groovy script that accepts a list of Blueprint pages and based on that deletes pages from both Blueprint and corresponding livecopies. if the pages are to be deleted from both Blueprint and livecopy then the script execution should be fine.
@Nimma05 Yes, as long as you are able to download the report it should be ok.
The execute report action is not optimized for a large result set and hence leads to the mentioned error more often than not.