---
title: "Enroll contacts in a sequence"
method: POST
path: "/v1/sequences/{sequenceId}/enroll"
tags: ["Sequences"]
---

# Enroll contacts in a sequence

`POST /v1/sequences/{sequenceId}/enroll`

Enroll one or more contacts into a sequence. Contacts already enrolled are skipped.

## Path parameters

- `sequenceId` string, required

## Request body

- object
  - `contactIds` string[], required
  - `channelIds` string[] — Optional. Auto-detected if not provided.

## Response `200`

Enrollment results

- object
  - `success` boolean
  - `enrolled` integer — Number of contacts successfully enrolled
  - `failed` integer — Number that failed (already enrolled, or no subscribed channel on the sequence platform)
  - `results` object[] — Per-contact outcome
    - `contactId` string
    - `success` boolean
    - `error` string — Present when success is false

## Other responses

- `400` — Invalid request
- `401` — Unauthorized
- `404` — Resource not found

---

[API](https://skmtc.net/zernio/apis/zernio-api.md) · [All operations](https://skmtc.net/zernio/apis/zernio-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/zernio/zernio-api/versions/51932b099b2f/schema)