> ## 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.

# What-If analysis

export const productName = "Atoti FRTB";

{productName} uses native Atoti What-If capabilities to deliver powerful simulation tools in the following areas:

* Desk reclassification (IMA/SA)
* Trade scaling
* Parameter set changes (including correlation and risk weight)
* Datastore changes

What-If is applicable at any level in the hierarchy and you can drill down and propagate the effect of the what-if simulation to the lower levels.

## Types of What-If analysis

* Desk reclassification.
  See [Switch Desk What-If Tool](./what-if-switch-desk)
* Scaling: adjust the trade data by a given percentage or an absolute
  amount.
  See [FRTB Trade Scaling](./what-if-scaling)
* Parameter set changes.
  See [Parameter Sets What-If Widget](./what-if-parameters-widget)
* File upload: create or append a WhatIf scenario by uploading CSV files into the cube.
  See [File Upload](./file-upload)
* Simple datastore changes: modify data in the datastore.
  See [Simple Datastore Changes](./what-if-simple-datastore-changes)

Check out our video tutorial on Trade Scaling and Desk Reclassification:

<Frame>
  <iframe src="https://fast.wistia.com/embed/iframe/4treytr1hx" width="100%" height="400" frameBorder="0" allowFullScreen />
</Frame>

## Branches

Each simulation you run creates a separate cloned branch of the master.
However, as the What-If is purely for simulation purposes, these
branches never impact the master branch.

### WhatIf Manager

To manage your branches and the simulations on them, use the **WhatIf Manager**.

To open the WhatIf Manager:

1. In the top left menu, click **Insert** > **Widgets**. This opens the list of available widgets.
2. From the list, drag and drop the WhatIf Manager widget to your dashboard.
   <Frame>
     <img src="https://mintcdn.com/activeviam/3WM26kEPUrEWlXvw/solutions/frtb/6.0/images/whatif-manager-open.gif?s=6b3f3146f76b7a039c96668ecf424fd6" alt="Open What-If Manager" width="1900" height="882" data-path="solutions/frtb/6.0/images/whatif-manager-open.gif" />
   </Frame>

The widget displays a list of your branches:

<Frame>
  <img src="https://mintcdn.com/activeviam/3WM26kEPUrEWlXvw/solutions/frtb/6.0/images/whatif-manager.png?fit=max&auto=format&n=3WM26kEPUrEWlXvw&q=85&s=0d3b0a5b745ee7c0ba522faa5ef515c0" alt="WhatIf Manager screen" width="1576" height="487" data-path="solutions/frtb/6.0/images/whatif-manager.png" />
</Frame>

You can view the audit columns (Submission Name, Created by, Creation Date, Execution Date, Status, Branch Name, Operation), and remove a branch by clicking the **Delete** button.

Clicking the + button in front of a row displays more details about your branch. Here you can also run a diff between the changes on your WhatIf branch and the master branch.

<Note>
  The diff is not available for what-ifs created using the file upload widget.
</Note>

<Frame>
  <img src="https://mintcdn.com/activeviam/3WM26kEPUrEWlXvw/solutions/frtb/6.0/images/whatif-manager-details.gif?s=ea64ccce75b52f6ce6778750444996ad" alt="WhatIf Manager diff" width="2122" height="440" data-path="solutions/frtb/6.0/images/whatif-manager-details.gif" />
</Frame>

## Audit Trail

In the reference implementation of {productName}, there is no audit
trail or persistence for the What-If simulations. Instead, the What-If
branches are cleaned-up on a regular basis depending on your
configuration.

## Customizing the What-If configuration

The What-If framework has been designed to be adapted and configured
based on your use cases.