# Environment Topic Catalogue

Topics can be accessed via the Global Data Catalogue or at an environment level.

## Creating topics

To create a topic go to **Environments->\[Your Environment]->Workspace->Explore->New Topic**. Enter the name, partitions and replication factor.

If [topic settings](https://docs.lenses.io/latest/devx/6.0/user-guide/topics/environment-topic-catalogue/topic-settings) apply, you will not be able to create the topic unless the rules have been met.

{% hint style="danger" %}
Azure EventHubs only support delete or compact as a topic cleanup policy.
{% endhint %}

## Viewing topic details

The Explore screen lists high-level details of the topics

Selecting a topic allows you to drill into more details.

Topics marked for deletion will be highlighted with a **D.**

Compacted topics will be highlighted with a **C.**

## Increasing the number of partitions

To increase the number of partitions, select the topic, then select **Increase Partitions** from the actions menu. Increasing the number of partitions **does not** automatically rebalance the topic.

## Overriding a topic configurations

Topics inherit their configurations from the broker defaults. To override a configuration, select the topic, then the **`Configuration`** tab. Search for the desired configuration and edit its value.

## Deleting topics

To delete a topic, click the trash can icon.

Topics can only be deleted if all clients reading or writing to the topic have been stopped. The topic will be marked for deletion with a **D** until the clients have stopped.

## **Empty or compacted topics**

To quickly find compacted or empty topics use quick filter checkboxes, for example, you can find all empty topics and perform a bulk delete action on them.