---
title: "Add an equivalent-id entry"
method: POST
path: "/identifiers/{did}/equivalent-ids"
tags: ["EquivalentIds"]
---

# Add an equivalent-id entry

`POST /identifiers/{did}/equivalent-ids`

Adds an equivalent DID identifier. The request body is the shared
single-string body `{ "value": "<DID>" }`; the response exposes the
value as `equivalentDid`.

## Parameters

- `./common-components.yml#/components/parameters/CorrelationId` — unresolved $ref

## Request body

- EquivalentIdCreateRequest — Request body for adding an equivalent-id resource. The implementation accepts the shared single-string body and maps `value` to the response field `equivalentDid`.
  - `value` string, required — The equivalent DID string.

## Response `201`

Equivalent-id entry added successfully.

- EquivalentIdEntry — unresolved $ref

## Other responses

- `400` — unresolved $ref
- `401` — unresolved $ref
- `403` — unresolved $ref
- `404` — unresolved $ref
- `409` — unresolved $ref
- `500` — unresolved $ref

## Changes

- **2026-06-26** `a1581f6b71f3` — 1 breaking, 1 warning
  - added the new required request property `value`
  - removed the request property `equivalentDid`

[Change history](https://skmtc.dev/sphereon-opensource/apis/did-rest-api/changes/identifiers/:did/equivalent-ids/post.md)

---

[API](https://skmtc.dev/sphereon-opensource/apis/did-rest-api.md) · [All operations](https://skmtc.dev/sphereon-opensource/apis/did-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/sphereon-opensource/did-rest-api/revisions/d575fc307e80/schema)