# Manual validation for digitize documents

> Manually extract and validate data from a digitized image document using Digitize Document and Present Validation Station activities.

The example below explains how to manually extract data from an image and present the output in a separate file. It presents activities such as [Digitize Document](https://docs.uipath.com/activities/other/latest/document-understanding/digitize-document) or [Present Validation Station](https://docs.uipath.com/activities/other/latest/document-understanding/present-validation-station). You can find these activities in the **UiPath.IntelligentOCR.Activities** package.

:::note
This workflow is using an older version of the **UiPath.IntelligentOCR.Activities** package.
:::

Steps:

1. Open Studio and create a new **Process** named by default **Main**.
   :::note
   Make sure to add all the needed files (`.json` files and all the images) inside the project folder.
   :::
2. Add a **Sequence** container in the **Workflow Designer** and create the variables shown in the following table:

   Table 1. Variables to be created

   |  | **Variable Type** | **Default Value** |
   | --- | --- | --- |
   | `Text` | **String** |  |
   | `DOM` | **UiPath.DocumentProcessing.Contracts.Dom.Document** |  |
   | `Data` | **UiPath.DocumentProcessing.Contracts.Taxonomy.DocumentTaxonomy** |  |
   | `DocumentTaxonomy` | **UiPath.DocumentProcessing.Contracts.Taxonomy.DocumentTaxonomy** |  |
   | `TaxonomyJSON` | **String** |  |
   | `HumanValidated` | **UiPath.DocumentProcessing.Contracts.Results.ExtractionResult** |  |
3. Add a **Read Text File** activity inside the sequence.
   * In the **Properties** panel, add the name of the file, in this case `"taxonomy.json"`, in the **FileName** field.
   * Add the variable `TaxonomyJSON` in the **Content** field.
4. Add an **Assign** activity after the **Read Text File** activity.
   * Add the variable `Data` in the **To** field and the expression `DocumentTaxonomy.Deserialize(TaxonomyJSON)` in the **Value** field. This activity builds the taxonomy for extraction.
5. Add a **Digitize Document** activity after the **Assign** activity.
   * In the **Properties** panel, add the value `1` in the **DegreeOfParallelism** field.
   * Add the expression `"Input\Invoice01.tif"` in the **DocumentPath** field.
   * Add the variable `DOM` in the **DocumentObjectModel** field.
   * Add the variable `Text` in the **DocumentText** field.
6. Add a **Google OCR** engine inside the **Digitize Document** activity.
   * In the **Properties** panel, add the variable `Image` in the **Image** field.
   * Select the check box for the **ExtractWords** option. This option extracts the on-screen position of all detected words.
   * Add the expression `"eng"` in the **Language** field.
   * Select the option `Legacy` from the **Profile** drop-down list.
   * Add the value `2` in the **Scale** field.
7. Add a **Present Validation Station** activity after the **Digitize Document** activity.
   * In the **Properties** panel, add the variable `DOM` in the **DocumentObjectModel** field.
   * Add the expression `"Input\Invoice01.tif"` in the **DocumentPath** field.
   * Add the variable `Text` in the **DocumentText** field.
   * Add the variable `Data` in the **Taxonomy** field.
   * Add the variable `HumanValidated` in the **ValidatedExtractionResults** field.
8. Add a **For Each** activity under the **Present Validation Station** activity.
   * In the **Properties** panel, select the option `UiPath.DocumentProcessing.Contracts.Results.ResultsDataPoint` from the **TypeArgument** drop-down list.
   * Add the expression `HumanValidated.ResultsDocument.Fields` in the **Values** field.
9. Add a **Log Message** activity inside the **Body** of the **For Each** activity.
   * Select the option `Info` from the **Level** drop-down list.
   * Add the expression `item.FieldName` in the **Message** field.
10. Add a **Log Message** activity below the first **Log Message** activity.
    * Select the option `Info` from the **Level** dropdown list.
    * Add the expression `item.Values(0).Value.ToString` in the **Message** field.
11. Add a **Write Line** activity under the **Log Message** activities.
    * Add the value `""` in the **Text** field.
12. Run the process. The robot uses the IntelligentOCR activities to manually process the data and to present the results.

Visit the following link to download the example as a `ZIP` file: [Example](https://docexamples.uipath.com/examples/Activities/Manual%20Validation%20for%20Digitize%20Documents.zip).