scheduled activation in aem 6.3 SP2

[#1]

When a user schedules a page for activation/deactivation they are getting the following error

"Could not schedule page for deactivation"

I have checked for the user permission and it seems to be in place. Is there any specific folder/node they need access to? The same thing works for the admin user.

[#2]

Are they trying to activate a page via a workflow that is fired off using a schedule?

[#3]

That is correct.

[#4]

I am also facing similar issue , whil activating the page from siteadmin (Activate -> Activate later) for content authors.

Do i have to add any special permissions to content authors?

Currently only admin is able to do this activity?

[#5]

Seems like bug to me.

[#6]

I have added the permissions to the content-authors for this path /etc/worflow/instances.

Now the authors are able to activate later.

But we are seeing it as activated by workflow-process-service.

is this a valid behaviour?

Can i give authors permissions to the above mentioned path?

[#7]

I set the permissions like this. Needs also read permissions for the models.