---
title: "Update the ThirdPartyCustomerId."
method: PUT
path: "/Leads/{leadId}/thirdPartyCustomerId"
tags: ["Enrich an Application"]
---

# Update the ThirdPartyCustomerId.

`PUT /Leads/{leadId}/thirdPartyCustomerId`

This endpoint allows you to update the ThirdPartyCustomerId for a given lead.

## Path parameters

- `leadId` string, uuid, required

## Headers

- `api-version` string

## Request body

- ThirdPartyCustomerIdModel
  - `thirdPartyCustomerId` string, required — Gets or sets gets the ThirdPartyCustomerId.

## Response `204`

No Content

## Other responses

- `400` — Bad Request

---

[API](https://skmtc.dev/youlend/apis/prequalification.md) · [All operations](https://skmtc.dev/youlend/apis/prequalification/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/youlend/prequalification/revisions/a76313c6cc3d/schema)