---
title: "Check for swaps and other errors"
canonical: "https://help.vicon.com/space/ShogunPost121/1253736719/Check%20for%20swaps%20and%20other%20errors"
format: markdown
---
> ⚠️ **Important**  
> ⚠️ Before filling gaps, you must find and fix any labeling swaps or errors in your data. Gap-filling in Shogun relies on the data before and after the gaps to predict marker location, so any labeling errors will cause gap-filling to fail.

To identify swaps and other errors, on the time bar, select Play  to view your data in the **3D Scene** view. For a closer look, slowly scrub through the whole take (drag the current time indicator along the timeline, or for finer control, press the A or S key), carefully checking for any 'popping', unexpected movement or obvious misalignment.

For a more detailed view, use the normal mouse actions to move around the view: drag to rotate the view, right-click and drag to zoom in or out, left- and right-click and drag to pan. If you need to view the image from a different angle, you can use one of the orthogonal views.

> ![Perspective (orthogonal) options for 3D Scene in Vicon Shogun Post.](media://52a55d34-90ff-41bb-a682-70d64138420c)

Use the **View Filters** options in the **3D Scene** view to make it easy to recognize any issues. For more information on recognizing and correcting swaps and other errors, see [Fix common labeling issues](https://vicon-help.atlassian.net/wiki/spaces/ShogunPost121/pages/1253736597).

To snap a 3D view camera to selected object(s), press C or select the **Snap** button  in the **3D Scene** view toolbar.