# POST /docs/api/v1/device-call-settings/modify-device-layout-by-device-id now requires sharedLineIndex

Calls to POST /docs/api/v1/device-call-settings/modify-device-layout-by-device-id, body parameter sharedLineIndex on Webexapis stopped working on March 2, 2025.

- API: Webexapis (webexapis.com)
- Kind: Behaviour change
- Announced: January 21, 2025
- Takes effect: March 2, 2025
- Calls after that day: fail
- Calls it hits: `POST /docs/api/v1/device-call-settings/modify-device-layout-by-device-id`, `body parameter sharedLineIndex`
- Source: [Changelog](https://developer.webex.com/docs/api/changelog)
- Verified: October 26, 2026, against Webexapis's own pages
- Page: https://www.okapi.bot/providers/webexapis/breaking-changes/post-docs-api-v1-device-call-settings-modify-device-layout-by-device-id-now/

## Webexapis's words

> Starting March 2nd, 2025, the sharedLineIndex field will be mandatory when lineKeyType is SHARED_LINE for the following APIs: Modify Device Layout by Device ID

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent