---
title: "New Features: We've made changes in an inbound webhook"
canonical: https://telnyx.com/release-notes/changes-in-an-inbound-webhook
---
# New Features: We've made changes in an inbound webhook

[Release notes](https://telnyx.com/release-notes)

# New Features: We've made changes in an inbound webhook

### 11, Feb 2021

## New Features: We've made changes in an inbound webhook

Telnyx is notifying our Programmable Fax API users of an **upcoming change to webhooks** you receive from Telnyx.

Inbound fax webhooks notify you when a fax is received to one of your Telnyx phone numbers. From 16th, February 2021, webhooks associated with inbound faxes will be formatted to include a new `partial_content` field.

The new field being added to the inbound fax webhooks will show when a file in an incoming fax transmission has been partially received. This may happen if issues have prevented a fax's contents from being fully transmitted. The `media_url` field which currently exists in inbound fax webhooks will contain the part of the fax contents which was successfully transmitted.

In order to ensure that your integrations are unaffected, you should update any application code you have written which processes webhooks from the Telnyx Programmable Fax API to accommodate this new `partial_content` field.

No data or fields are being removed from inbound fax webhooks.

You can read the documentation for the Telnyx Programmable Fax API, in our [developer center](https://developers.telnyx.com/docs/programmable-fax/get-started).

If you have any further questions about this change, [reach out to our team](https://telnyx.com/contact-us "Contact Us").

[Start building](https://telnyx.com/sign-up)

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