You cannot initiate an Process from Orchestrator for an Attended Robot. This was restrcited a few versions ago as it would create a risk and potential inconvenience for end users.
Process on an attended Robot are invoked directly from Assistant.
If you want/need to kick off a process from Orchestrator on the same User/Machine that you are using, you need to also configure your user’s robot with an Unattended Runtime/Robot Credentials in the User’s Profile.
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