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---
stage: Growth
group: Product Intelligence
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
---
# Snowplow review guidelines
This page includes introductory material for a
[Product Intelligence ](https://about.gitlab.com/handbook/engineering/development/growth/product-intelligence/ )
review, and is specific to Snowplow related reviews. For broader advice and
general best practices for code reviews, refer to our [code review guide ](../code_review.md ).
## Resources for reviewers
- [Snowplow Guide ](index.md )
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- [Event Dictionary ](https://metrics.gitlab.com/snowplow.html )
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## Review process
We recommend a Product Intelligence review when a merge request (MR) involves changes in
events or touches Snowplow related files.
### Roles and process
#### The merge request **author** should
- For frontend events, when relevant, add a screenshot of the event in
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the [testing tool ](implementation.md#develop-and-test-snowplow ) used.
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- For backend events, when relevant, add the output of the
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[Snowplow Micro ](implementation.md#snowplow-micro ) good events
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`GET http://localhost:9090/micro/good` (it might be a good idea
to reset with `GET http://localhost:9090/micro/reset` first).
- Update the [Event Dictionary ](event_dictionary_guide.md ).
#### The Product Intelligence **reviewer** should
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- Check that the [event taxonomy ](index.md#structured-event-taxonomy ) is correct.
- Check the [usage recommendations ](implementation.md#usage-recommendations ).
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- Check that the [Event Dictionary ](event_dictionary_guide.md ) is up-to-date.
- If needed, check that the events are firing locally using one of the
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[testing tools ](implementation.md#develop-and-test-snowplow ) available.
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- Approve the MR, and relabel the MR with `~"product intelligence::approved"` .