---
title: "Migrate from sentry-android 4.1.0 to 4.2.0"
description: "Learn about migrating from Sentry Android SDK 4.1.0 to 4.2.0."
url: https://docs.sentry.io/platforms/android/migration/v4-1-to-v4-2/
---

# Migrate from sentry-android 4.1.0 to 4.2.0 | Sentry for Android

`operation` is now a required property of the `SentryTransaction` and `SentrySpan`. Whenever a transaction or span is started, the value for `operation` must be provided:

```java
Sentry.startTransaction("transaction-name", "operation-name");
```