---
title: "Create a new Customer Alias"
method: POST
path: "/customer-aliases"
tags: ["Customer Aliases"]
---

# Create a new Customer Alias

`POST /customer-aliases`

Create a new Customer Alias

## Headers

- `Authorization` string, required
- `sequence-version` '2024-07-30'
- `Idempotency-Key` string

## Request body

- CreateCustomerAliasRequestModel
  - `customerId` string, required — Customer ID
  - `value` string, required — Alias value
  - `label` string — Alias label

## Response `201`

Created

- CustomerAliasResponseModel
  - `id` string, required — Unique ID
  - `sequenceAccountId` string, required — Sequence Account ID
  - `customerId` string, required — Customer ID
  - `value` string, required — Alias value
  - `createdAt` string, required — Created At
  - `deletedAt` string — Deleted At
  - `label` string — Alias label
  - `archivedAt` string — Archived At

## Other responses

- `400` — Bad Request
- `401` — Unauthorized
- `500` — Internal Server Error

## Changes

> 714 revisions in range; 511 could not be searched.

- **2026-06-15** `d7ae8d55b7bf` — 1 warning, 1 info
  - deleted the `header` request parameter `Sequence-Version`
  - added the new optional `header` request parameter `sequence-version`

[Change history](https://skmtc.dev/sequencehq/apis/sequence/changes/customer-aliases/post.md)

---

[API](https://skmtc.dev/sequencehq/apis/sequence.md) · [All operations](https://skmtc.dev/sequencehq/apis/sequence/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/sequencehq/sequence/revisions/e520d2f95b7b/schema)