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

# composition_attester

A participant who has attested to the accuracy of the composition/document (`Composition.attester[]`).

**Primary Keys:** composition\_attester\_id

**Foreign Keys:**

* composition\_id - links to the [composition](/medical-api/handling-data/schema-v100/composition/base) table

| Column | Data Type | Description |
| - | - | - |
| composition\_attester\_id | varchar | Unique identifier for the attester row |
| composition\_id | varchar | Parent composition |
| mode | varchar | Attestation mode (e.g., legal, professional) |
| time | datetime | When the attestation occurred |
| party\_reference\_id | varchar | Resolved ID of the attester (e.g. Practitioner or Patient) |
| party\_reference\_type | varchar | Type of referenced resource (e.g. Practitioner, Patient) |

**Related Tables:**

**Parent:**

* [composition](/medical-api/handling-data/schema-v100/composition/base)


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