---
title: "GET /crm/lists/2026-03/idmapping"
method: GET
path: "/crm/lists/2026-03/idmapping"
tags: ["Basic"]
---

# GET /crm/lists/2026-03/idmapping

`GET /crm/lists/2026-03/idmapping`

## Query parameters

- `legacyListId` string

## Response `200`

successful operation

- CrmListsPublicMigrationMapping
  - `legacyListId` string, required — The legacy list id for the list
  - `listId` string, required — The V3 list id for the list

## Other responses

- `default` — An error occurred.

---

[API](https://skmtc.net/hubspot/apis/hubspot-api-specification.md) · [All operations](https://skmtc.net/hubspot/apis/hubspot-api-specification/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/hubspot/hubspot-api-specification/versions/f9c7181056c5/schema)