---
title: "Changes to Create spans"
method: POST
path: "/v1/projects/{project_identifier}/spans"
---

# Changes to Create spans

`POST /v1/projects/{project_identifier}/spans`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 87 revisions.

- **2026-10-12** `4142c3a23279`: 1 info

## Changes

- **2026-10-12** `4142c3a23279`: 1 info
  - added the non-success response with the status `503`

---

[Operation](https://skmtc.dev/arize-ai/apis/arize-phoenix-rest-api/docs/v1/projects/:project_identifier/spans/post.md) - [API](https://skmtc.dev/arize-ai/apis/arize-phoenix-rest-api.md) - [Page](https://skmtc.dev/arize-ai/apis/arize-phoenix-rest-api/changes/v1/projects/:project_identifier/spans/post)