# Do I need versioning if **URL:** \ **Category:** Community Support\ **Tags:** java-sdk\ **Created:** [November 1, 2021, 7:41pm UTC](https://community.temporal.io/t/do-i-need-versioning-if/3289 "2021-11-01T19:41:13Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![nkatre](https://avatars.discourse-cdn.com/v4/letter/n/d6d6ee/32.png) [@nkatre](https://community.temporal.io/u/nkatre)\ **Post date:** [November 1, 2021, 7:41pm UTC](https://community.temporal.io/t/do-i-need-versioning-if/3289/1 "2021-11-01T19:41:13Z")
Hi, I have an activity which is part of a workflow. Do I need versioning if the logic of this activity is modified ? ---
**Author:** ![maxim](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/maxim/32/8_2.png) [@maxim](https://community.temporal.io/u/maxim)\ **Post date:** [November 1, 2021, 8:48pm UTC](https://community.temporal.io/t/do-i-need-versioning-if/3289/2 "2021-11-01T20:48:56Z")
No, activity implementation can change any time without a problem. Versioning is required only when the workflow code changes. ---
**Author:** ![nkatre](https://avatars.discourse-cdn.com/v4/letter/n/d6d6ee/32.png) [@nkatre](https://community.temporal.io/u/nkatre)\ **Post date:** [November 3, 2021, 2:28pm UTC](https://community.temporal.io/t/do-i-need-versioning-if/3289/3 "2021-11-03T14:28:42Z")
Do I need versioning if I remove of add activity retry options ? ---
**Author:** ![maxim](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/maxim/32/8_2.png) [@maxim](https://community.temporal.io/u/maxim)\ **Post date:** [November 3, 2021, 2:39pm UTC](https://community.temporal.io/t/do-i-need-versioning-if/3289/4 "2021-11-03T14:39:35Z")
> Do I need versioning if I remove of add activity retry options ? No versioning is needed. Retry options, as well as activity argument values, are not compared during replay. ---
**Author:** ![nkatre](https://avatars.discourse-cdn.com/v4/letter/n/d6d6ee/32.png) [@nkatre](https://community.temporal.io/u/nkatre)\ **Post date:** [November 12, 2021, 6:26pm UTC](https://community.temporal.io/t/do-i-need-versioning-if/3289/5 "2021-11-12T18:26:25Z")
@maxim Where can i read more on whats compared during replay. I also made an incremental change to rate limit activities on the taskqueue across all workers using `taskQueueActivitiesPerSecond`. Is this compared during replay ? ---
**Author:** ![maxim](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/maxim/32/8_2.png) [@maxim](https://community.temporal.io/u/maxim)\ **Post date:** [November 12, 2021, 7:15pm UTC](https://community.temporal.io/t/do-i-need-versioning-if/3289/6 "2021-11-12T19:15:46Z")
Any changes to WorkerOptions are safe without versioning. So taskQueueActivitiesPerSecond can be changed any time. We don’t have a document that specifies what is considered non compatible change. Here is a short version: - Type of operation. For example, adding a `Workflow.sleep` anywhere in the workflow code. Or changing activity invocation to a child workflow invocation. - Type of activity. For example, invoking activity `A` instead of `B`. - Type of a child workflow. For example, invoking child of type `C` instead of `D`. Anything that doesn’t affect the order of these operations is considered safe. The tricky part is that the order can have non trivial dependencies on workflow state. ---
**Author:** ![Sowmya1](https://avatars.discourse-cdn.com/v4/letter/s/58f4c7/32.png) [@Sowmya1](https://community.temporal.io/u/Sowmya1)\ **Post date:** [January 20, 2025, 6:32am UTC](https://community.temporal.io/t/do-i-need-versioning-if/3289/7 "2025-01-20T06:32:39Z")
is Versioning required when we add few extra lines in workflow code? ---
**Author:** ![maxim](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/maxim/32/8_2.png) [@maxim](https://community.temporal.io/u/maxim)\ **Post date:** [January 20, 2025, 5:40pm UTC](https://community.temporal.io/t/do-i-need-versioning-if/3289/8 "2025-01-20T17:40:31Z")
Yes, if these lines generate new commands. For example, scheduling an activity or calling workflow sleep generates a command. No, if these lines don’t affect how the workflow is executed, for example, they change some values used only by a query.