---
title: "Update Participant by ID"
method: PATCH
path: "/sign/envelopes/{envelopeID}/participants/{participantID}"
tags: ["Sign"]
---

# Update Participant by ID

`PATCH /sign/envelopes/{envelopeID}/participants/{participantID}`

The **Update Participant by ID** endpoint modifies a participant's authentication settings.
The participant's email cannot be updated. All parameters are optional.

## Path parameters

- `envelopeID` string, uuid, required
- `participantID` string, uuid, required

## Request body

- ParticipantUpdate
  - `authentication` union — Participant authentication. Optional field.
    - AccessCode — Access code
      - `accessCode` string — Access code. It must contain between 4-32 characters.
      - `type` 'AccessCode'
    - SMS — SMS
      - `countryCode` string — Country code. It must start with `+` and be followed by 1-4 digits. For example +1, +55, +598
      - `phoneNumber` string — Phone number. Enter digits only, without a country code or formatting characters.
      - `type` 'SMS'

## Response `200`

Participant updated successfully

- Participant
  - `ID` string, uuid — The unique identifier of the participant
  - `email` string — The email address of the participant
  - `role` string — The role of the participant
  - `authentication` union — Participant authentication
    - AccessCode — Access code
      - `accessCode` string — Access code. It must contain between 4-32 characters.
      - `type` 'AccessCode'
    - SMS — SMS
      - `countryCode` string — Country code. It must start with `+` and be followed by 1-4 digits. For example +1, +55, +598
      - `phoneNumber` string — Phone number. Enter digits only, without a country code or formatting characters.
      - `type` 'SMS'

## Other responses

- `400` — Invalid request
- `401` — Unauthorized - Invalid or missing JWT token
- `404` — Envelope or participant not found

---

[API](https://skmtc.net/gonitro/apis/nitro-sign-public-api.md) · [All operations](https://skmtc.net/gonitro/apis/nitro-sign-public-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/gonitro/nitro-sign-public-api/revisions/ed9efc6a8a47/schema)