# Update creative VAST with Extension node

POST Request: Header with Content-Type: application/xml, body with XML tag as mentioned in desription

Endpoint: POST /video/v2.0/creatives/{video_id}/vast/extension
Version: v1.0

## Path parameters:

  - `video_id` (string, required)
    _


## Response 200 fields

## Response 404 fields

## Response 503 fields