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3324 retro review (#3414)
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* style(formatting): technical review 3324

* clarify screenshot
christinaausley authored and theburi committed Apr 3, 2024
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@@ -8,18 +8,20 @@ import MarkerGuideline from "@site/src/mdx/MarkerGuideline";

<span class="badge badge--platform">Camunda 7 only</span>

Each execution of a model resource (BPMN, DMN, and CMMN) generates historic data during execution that is stored in the database. In Camunda 7 [history cleanup](https://docs.camunda.org/manual/latest/user-guide/process-engine/history/) removes this historic data from the database based on a defined history time to live (HTTL).
Each execution of a model resource (BPMN, DMN, and CMMN) generates historic data during execution that is stored in the database. In Camunda 7, [history cleanup](https://docs.camunda.org/manual/latest/user-guide/process-engine/history/) removes this historic data from the database based on a defined **history time to live (HTTL)**.

Starting [from Camunda 7.20](https://docs.camunda.org/manual/develop/update/minor/719-to-720/#enforce-history-time-to-live) you must configure HTTL in one of the following ways:
From [Camunda 7.20](https://docs.camunda.org/manual/develop/update/minor/719-to-720/#enforce-history-time-to-live) onwards, you must configure HTTL in one of the following ways:

- Define HTTL per model directly in the Camunda Desktop Modeler.
- Define HTTL per model directly in Desktop Modeler.
- Set a default HTTL via an engine configuration.
- Switch off the HTTL check via an engine configuration if history cleanup is not used.

## <MarkerGuideline.Info /> History time to live not configured

![History time to live not configured](./img/history-time-to-live/info.png)

In the screenshot above, note that the time to live must be defined under **History cleanup** in the properties panel.

## References

- [History documentation](https://docs.camunda.org/manual/latest/user-guide/process-engine/history/)

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