---
title: "PATCH /model-customization/custom-model-deployments/{customModelDeploymentIdentifier}"
method: PATCH
path: "/model-customization/custom-model-deployments/{customModelDeploymentIdentifier}"
---

# PATCH /model-customization/custom-model-deployments/{customModelDeploymentIdentifier}

`PATCH /model-customization/custom-model-deployments/{customModelDeploymentIdentifier}`

Updates a custom model deployment with a new custom model. This allows you to deploy updated models without creating new deployment endpoints.

## Path parameters

- `customModelDeploymentIdentifier` string, required

## Request body

- object
  - `modelArn` string, required — ARN of the new custom model to deploy. This replaces the currently deployed model.

## Response `202`

Success

- UpdateCustomModelDeploymentResponse
  - `customModelDeploymentArn` string, required — ARN of the custom model deployment being updated.

## Other responses

- `480` — ResourceNotFoundException
- `481` — AccessDeniedException
- `482` — ValidationException
- `483` — InternalServerException
- `484` — ThrottlingException

---

[API](https://skmtc.net/aws/apis/bedrock.md) · [All operations](https://skmtc.net/aws/apis/bedrock/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/aws/bedrock/versions/3bc874e43ecd/schema)