LaunchDarkly import crashes due to API errors

[sentry]

Sentry Issue: FLAGSMITH-API-5FH

As of 2026-01-06, our LaunchDarkly importer fails with a 400 Bad Request hinting to an API change:

{"code": "invalid_request", "message": "The API version requested is not allowed"}

Our code uses LaunchDarkly API version 20220603 for this integration. Registering a new API token matching this version doesn't help. It looks like they have decided to advance EOL scheduled for EOY 2026?

Upgrading the version number in the API (see

flagsmith/api/integrations/launch_darkly/constants.py

Line 2 in fc4076f

LAUNCH_DARKLY_API_VERSION = "20220603"

) leads to API incompatibility errors, which calls for efforts to update our code and match LD's latest API 20240415.

Note

The import use case is known to be working until the day before, 2026-01-05, even with an API key of the newer LaunchDarkly API, 20240415.