> ## Documentation Index
> Fetch the complete documentation index at: https://docs.usetero.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Policy categories

> Telemetry issue categories that can produce policy recommendations

Tero groups telemetry issues into the categories below. Each category can produce policy recommendations.

| Category                                                                        | Signal                                                                | Typical action                                                  |
| ------------------------------------------------------------------------------- | --------------------------------------------------------------------- | --------------------------------------------------------------- |
| [Duplicate fields](/policies/categories/duplicate-fields)                       | The same value appears in multiple fields.                            | Remove duplicate fields.                                        |
| [Accidental debug statements](/policies/categories/accidental-debug-statements) | Temporary debugging messages shipped to production.                   | Remove the statement in code or drop the matching event.        |
| [Malformed data](/policies/categories/malformed-data)                           | Binary, corrupted, or unparseable log payloads.                       | Drop malformed events.                                          |
| [Health checks](/policies/categories/health-checks)                             | Successful readiness, liveness, or synthetic monitor requests.        | Drop successful probe logs.                                     |
| [Bot traffic](/policies/categories/bot-traffic)                                 | Requests from known crawlers, scanners, and unfurlers.                | Drop or sample matching bot request logs.                       |
| [Instrumentation bloat](/policies/categories/instrumentation-bloat)             | SDK, agent, collector, or platform metadata with little review value. | Remove low-value fields.                                        |
| [PII leakage](/policies/categories/pii-leakage)                                 | Sensitive values in log fields or free-form messages.                 | Redact or remove sensitive values.                              |
| [Excessive payloads](/policies/categories/excessive-payloads)                   | Large bodies, serialized objects, or oversized stack traces.          | Trim or remove large fields.                                    |
| [Debug mode left on](/policies/categories/debug-mode-left-on)                   | A service emits prolonged DEBUG-level volume in production.           | Create a ticket, open a config PR, or apply a temporary filter. |
| [Logs in hot path](/policies/categories/logs-in-hot-path)                       | One event dominates a service's steady-state log volume.              | Remove or relocate the log statement.                           |
| [Burst protection](/policies/categories/burst-protection)                       | Infrastructure error events can flood during outages.                 | Rate-limit the matching event.                                  |
| [High cardinality tags](/policies/categories/high-cardinality-tags)             | Metric tags have unbounded or fast-changing values.                   | Remove high-cardinality tags.                                   |

Use [Policy lifecycle](/policies/lifecycle) for policy states and [Enforcement](/policies/enforcement/overview) for enforcement methods.