---
title: "Create or update Applications from Templates."
method: PUT
path: "/applications"
tags: ["Application Management"]
---

# Create or update Applications from Templates.

`PUT /applications`

This is method to deploy a templated Application. This will be used to render a Template, and that Template will get posted to AS3. The call to AS3 may be async, so this endpoint must also be async. A Task will be returned upon successful parameter submission that can track the progress of the deployment.

## Request body

- union[] — An application request.
  - union
    - FastApplicationDefinition — Application Definition.
      - `name` string, required — Must be valid Template in the system.
      - `parameters` ParametersDefinition, required — Object must conform to specified template's schema.
      - `allowOverwrite` boolean — Do not error if an Application with the same name already exists in the tenant.
    - FastApplicationDefinition[] — Application Definition List.
      - `name` string, required — Must be valid Template in the system.
      - `parameters` ParametersDefinition, required — Object must conform to specified template's schema.
      - `allowOverwrite` boolean — Do not error if an Application with the same name already exists in the tenant.

## Response `202`

Template Job Submitted Successfully, check the provided Task ID to get the status of the deployment.

- FastApplicationResponse — The response message when performing Application operations.
  - `_links` LinksDefinition — An object containing link references.
    - `self` string — Self-link to endpoint
    - `task` string — Self-link to task endpoint
  - `code` integer, required
  - `requestId` integer
  - `message` object[], required
    - `id` string — The Task ID which can be used to query Task state.
    - `name` string — The name of the Template used.
    - `parameters` object — The parameters used to create/update the Application.

## Other responses

- `400` — AS3 errors (e.g., invalid schema) are forwarded as 400-level errors. See AS3 documentation for details.
- `500` — Internal error. A bug report should be filed.

---

[API](https://skmtc.net/f5networks/apis/f5-big-ip-application-services-templates-api.md) · [All operations](https://skmtc.net/f5networks/apis/f5-big-ip-application-services-templates-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/f5networks/f5-big-ip-application-services-templates-api/revisions/69d12c15d1c7/schema)