---
title: "POST /v1/courses/{courseId}/aliases"
method: POST
path: "/v1/courses/{courseId}/aliases"
tags: ["courses"]
---

# POST /v1/courses/{courseId}/aliases

`POST /v1/courses/{courseId}/aliases`

Creates an alias for a course. This method returns the following error codes: * `PERMISSION_DENIED` if the requesting user is not permitted to create the alias or for access errors. * `NOT_FOUND` if the course does not exist. * `ALREADY_EXISTS` if the alias already exists. * `FAILED_PRECONDITION` if the alias requested does not make sense for the requesting user or course (for example, if a user not in a domain attempts to access a domain-scoped alias).

## Path parameters

- `courseId` string, required

## Request body

- CourseAlias — Alternative identifier for a course. An alias uniquely identifies a course. It must be unique within one of the following scopes: * domain: A domain-scoped alias is visible to all users within the alias creator's domain and can be created only by a domain admin. A domain-scoped alias is often used when a course has an identifier external to Classroom. * project: A project-scoped alias is visible to any request from an application using the Developer Console project ID that created the alias and can be created by any project. A project-scoped alias is often used when an application has alternative identifiers. A random value can also be used to avoid duplicate courses in the event of transmission failures, as retrying a request will return `ALREADY_EXISTS` if a previous one has succeeded.
  - `alias` string — Alias string. The format of the string indicates the desired alias scoping. * `d:` indicates a domain-scoped alias. Example: `d:math_101` * `p:` indicates a project-scoped alias. Example: `p:abc123` This field has a maximum length of 256 characters.

## Response `200`

Successful response

---

[API](https://skmtc.net/google/apis/classroom.md) · [All operations](https://skmtc.net/google/apis/classroom/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/google/classroom/versions/1b98f151d40b/schema)