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Document Understanding activities
Last updated Apr 22, 2026
Manual validation for digitize documents
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 or 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:
-
Open Studio and create a new Process named by default Main.
Note:Make sure to add all the needed files (
.jsonfiles and all the images) inside the project folder. -
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 TextString DOMUiPath.DocumentProcessing.Contracts.Dom.Document DataUiPath.DocumentProcessing.Contracts.Taxonomy.DocumentTaxonomy DocumentTaxonomyUiPath.DocumentProcessing.Contracts.Taxonomy.DocumentTaxonomy TaxonomyJSONString HumanValidatedUiPath.DocumentProcessing.Contracts.Results.ExtractionResult -
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
TaxonomyJSONin the Content field.
- In the Properties panel, add the name of the file, in this case
-
Add an Assign activity after the Read Text File activity.
- Add the variable
Datain the To field and the expressionDocumentTaxonomy.Deserialize(TaxonomyJSON)in the Value field. This activity builds the taxonomy for extraction.
- Add the variable
-
Add a Digitize Document activity after the Assign activity.
- In the Properties panel, add the value
1in the DegreeOfParallelism field. - Add the expression
"Input\Invoice01.tif"in the DocumentPath field. - Add the variable
DOMin the DocumentObjectModel field. - Add the variable
Textin the DocumentText field.
- In the Properties panel, add the value
-
Add a Google OCR engine inside the Digitize Document activity.
- In the Properties panel, add the variable
Imagein 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
Legacyfrom the Profile drop-down list. - Add the value
2in the Scale field.
- In the Properties panel, add the variable
-
Add a Present Validation Station activity after the Digitize Document activity.
- In the Properties panel, add the variable
DOMin the DocumentObjectModel field. - Add the expression
"Input\Invoice01.tif"in the DocumentPath field. - Add the variable
Textin the DocumentText field. - Add the variable
Datain the Taxonomy field. - Add the variable
HumanValidatedin the ValidatedExtractionResults field.
- In the Properties panel, add the variable
-
Add a For Each activity under the Present Validation Station activity.
- In the Properties panel, select the option
UiPath.DocumentProcessing.Contracts.Results.ResultsDataPointfrom the TypeArgument drop-down list. - Add the expression
HumanValidated.ResultsDocument.Fieldsin the Values field.
- In the Properties panel, select the option
-
Add a Log Message activity inside the Body of the For Each activity.
- Select the option
Infofrom the Level drop-down list. - Add the expression
item.FieldNamein the Message field.
- Select the option
-
Add a Log Message activity below the first Log Message activity.
- Select the option
Infofrom the Level dropdown list. - Add the expression
item.Values(0).Value.ToStringin the Message field.
- Select the option
-
Add a Write Line activity under the Log Message activities.
- Add the value
""in the Text field.
- Add the value
-
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.