> For the complete documentation index, see [llms.txt](https://docs.zaui.com/io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zaui.com/io/api-function-definitions/activity-list-mapping.md).

# Activity List (Mapping)

The ***ActivityListRequest*** allows you to pull a list of available activities and options from the specified supplier. The activity list will include descriptive fields, options and the specific activity value to be used on subsequent API calls where a single activity is requested by your implementation.

It is the responsibility of any integration to store the unique activity codes for further API calls, where it is required.

{% hint style="info" %}
**Note:** Your implementation must store the returned activity codes for future calls, where required. The ActivityListRequest should be called periodically, since the supplier can update the available activities on the Zaui IO channels anytime, potentially making your stored activity codes stale.

**Note:**  Depending on the number of allowed activities that the supplier you are communicating with has provided for you, the data size on this call back can be large. As a result, it’s not uncommon to see this callback having a large data set. This call can often take up to 30 seconds to complete.
{% endhint %}


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