---
title: Versioning
url: https://docs.kaltura.com/docs/events-collaboration/app-registry-api/app-registry-versioning
---

## Versioning

Each app record has a `version` field (starts at 0). The version increments by 1 on each successful `update`, `enable`, or `disable` call that changes the record. Use versioning to detect concurrent modifications — if you read an app at version 3 and update it, the response returns version 4.

The version does NOT increment if an `enable`/`disable` call matches the current status (idempotent no-op).