# Document classification validation overview

> After automatic classification, one optional (but highly recommended) step is that of classification validation.

## What is document classification validation

After automatic classification, one optional (but highly recommended) step is that of classification validation.

This refers to a human review step, in which knowledge workers can review the classification results and correct them when necessary.

Using Classification Validation ensures that, downstream, all next steps within the Document Understanding<sup>TM</sup> Framework and run on the correct classification information.

### When classification validation should be used

It is strongly recommended to use the Document Classification Validation components when:

* you are dealing with multiple document types within a single file. This is a particularly important case, because if the automatic classification is wrong, or reports too few / too many pages within a class, if data extraction is also required downstream, then the data extraction component would be applied to the wrong content.
* you need 100% accuracy in classification and there are no other ways of validating that the classification results are correct.

### How to use the document classification validation components

Validating the classification results can be done by a human input through the use of [Classification Station](https://docs.uipath.com/document-understanding/automation-suite/2023.10/classic-user-guide/classification-station#classification-station).

The Classification Station is available both

* as an **attended activity**, through the use of the [Present Classification Station](https://docs.uipath.com/activities/other/latest/document-understanding/present-classification-station) activity, or
* as **Action Center** [tasks](https://docs.uipath.com/action-center/automation-suite/2023.10/user-guide/about-actions), through the use of the [Create Document Classification Action](https://docs.uipath.com/activities/other/latest/document-understanding/create-document-classification-action) and [Wait for Document Classification Action and Resume](https://docs.uipath.com/activities/other/latest/document-understanding/wait-for-document-classification-action-and-resume) activities.