| Authentication and password | A sign-in, recovery, password change or session-security action was attempted. | Outcome, principal when available, source context, timestamp and correlation. |
| Configuration change | A tenant, user, role, assignment, site, PLC, policy, agent or machine identity changed. | Actor, target ID, request attributes, result attributes and changed values. |
| PLC command | An explicit PlcConsole-owned operation was requested. | User, site, PLC, operation, addresses where appropriate, duration and result. |
| Authorization denied | The request was stopped by visibility, permission, scope or command policy. | Required permission, target, denial reason and request details. |
| Site-agent connection | An authenticated connection changed or an agent reported a version. | Connection address where recorded, software version, change direction and timestamps. |
| Credential lifecycle | An agent credential or service-account token was issued, rotated, revoked or retired. | Actor, target identity and outcome. Secret material must never appear. |