> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Exception 97.5 (hypothetical) lookback

<Badge color="gray" size="lg">[model\_eligibility](../tags/model_eligibility)</Badge>

|                                      |                                                     |
| ------------------------------------ | --------------------------------------------------- |
| **Description**                      | The historical Exception 97.5 (Hypothetical) values |
| **Hierarchies required in the view** | [Lookback](./lookback)                              |

The measure helps to inspect exceptions for PLAT and Backtesting.

<Note>
  You can change the lookback horizon (for instance 1M) to a shorter or longer observation window using the **NbDaysPLMeasures** context value.
</Note>