# HealthCoverageGroup

[All API schemas](/api-reference/schemas/)

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>sourceType</code> | Yes | <code>string</code> | Allowed: <code>VAULT</code>, <code>POLICY</code>, <code>FINALIZED&#95;SNAPSHOT</code>, <code>MARKET&#95;QUALITY&#95;SCORE</code>, <code>VENUE&#95;OBSERVATION</code>, <code>EXECUTION&#95;ATTRIBUTION</code>, <code>ANOMALY</code>, <code>INCIDENT</code>, <code>PROPOSAL</code> |
| <code>period</code> | Yes | <code>string</code> | Allowed: <code>CONTEXT</code>, <code>BASELINE</code>, <code>OBSERVATION</code> |
| <code>candidateCount</code> | Yes | <code>integer</code> | Minimum: <code>0</code>; Maximum: <code>9007199254740991</code> |
| <code>includedCount</code> | Yes | <code>integer</code> | Minimum: <code>0</code>; Maximum: <code>200</code> |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

Exact definition: <code>#/components/schemas/HealthCoverageGroup</code> in the [OpenAPI contract](/openapi/liquidity-operating-system-v2.openapi.json).