# Enhancements to session and user identifiers in webhook events

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## Enhancements

New `h323_headers`, `h323_headers.from_display_name`, `h323_headers.to_display_name` request fields in the Video SDK API:

-   `PATCH` `/v2/videosdk/sessions/{sessionId}/events`

New `session_id`, `session_name`, and `session_key` fields in the following Video SDK webhook events:

-   `session.alert`
-   `session.started`
-   `session.ended`
-   `session.live_streaming_started`
-   `session.live_streaming_stopped`
-   `session.sharing_started`
-   `session.sharing_ended`
-   `session.user_joined`
-   `session.user_left`

New `user_key` field in the following Video SDK webhook events:

-   `session.sharing_started`
-   `session.sharing_ended`

New fields `session_id`, `session_name` in the Video SDK webhook events:

-   `session.user_phone_callout_ringing`
-   `session.user_phone_callout_accepted`
-   `session.user_phone_callout_rejected`
-   `session.user_phone_callout_missed`

## Bug Fixes

Modify the validation of fields `sip_headers.from_display_name`, `sip_headers.to_display_name`, `sip_headers.from_uri` in the Video SDK API:

-   `PATCH` `/v2/videosdk/sessions/{sessionId}/events`