# Approves a Purchase Order Tier

Endpoint: PUT /purchaseOrders/tieredApproval
Version: v3.0: 3.26.2.3
Security: Auth API User Token

## Request fields (application/json-patch+json):

  - `approved` (boolean, required)

  - `notes` (string,null)

## Response 200 fields (application/json):

  - `updated` (boolean)

  - `usersNotified` (array,null)

  - `usersNotified.userId` (string)

  - `usersNotified.emailSent` (boolean)

  - `usersNotified.notified` (boolean)

  - `isFinalTier` (boolean)

  - `errors` (array,null)

  - `approved` (boolean, required)

  - `notes` (string,null)

## Response 500 fields (application/json):

  - `message` (string,null)

  - `errors` (array,null)

  - `errors.extensions` (string,null)


## Response 429 fields