Troubleshooting Webhook Registration Errors and Permission Requirements for Real-Time ServiceNow Integration

Hi All, I'm converting a working polling action to real-time action to check servicenow for new incidents. I'm now seeing webhook registration errors and cannot get it working. Google sends me to a systematic article that is no longer, explaining new permissions I need for real-time. Anyone have an idea what new permissions I would need and/or specic tables or data conditions? Seems like a long wait to use support for what should be a quick article read. Full error is "Webhook registration error. API returned: Connected user does not have sufficient permission. Make sure the required access control is granted."