> ## Documentation Index
> Fetch the complete documentation index at: https://docs.loopreturns.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Return processing



## OpenAPI

````yaml webhook ReturnProcessing
openapi: 3.1.0
info:
  title: Return Processing Webhook
  version: 1.0.0
  description: >
    This notification is sent when the **Return Processing** topic is requested
    when the

    asynchronous return processing finishes. For those who subscribe to this
    topic for more

    than one trigger event, the `trigger` property is included in the payload
    for reference.


    | Request Header   | Description               |

    | ---------------- | ------------------------- |

    | X-Loop-Signature | Hashed Webhook Secret Key |


    The X-Loop-Signature is a base64, HMAC hash of body payload using the
    Webhook Secret

    provided by Loop.


    Note: Before attempting to create your hash of the POST request body, make
    sure

    slashes have been escaped & newlines have been removed from the JSON.
servers: []
security: []
paths: {}

````