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Document Understanding User Guide
Automation CloudAutomation Cloud Public SectorAutomation SuiteStandalone
Last updated Nov 7, 2024

Known limitations

This page provides an overview of the current specifications and parameters for optimal utilization of Document UnderstandingTM modern projects.

Project-based limits

DescriptionLimit
Supported file formats
  • PNG
  • JPG/JPEG
  • PDF
  • TIF/TIFF
Image size limits
  • Minimum: 50 x 50 pixels
  • Maximum: 10,000 x 10,000 pixels
Maximum number of document types in a project50 document types
Maximum number of pages in a document type3000

After a certain point, adding more data doesn't improve model performance. This limitation makes sure that you do not annotate more documents than needed.

Maximum number of pages in a document500
Maximum number of pages in a project30,000
Maximum number of pages per document for pre-labeling30

If a documents has more than 30 pages, only the first 30 pages are pre-annotated.

Maximum number of fields300
Maximum number of requests processed in parallel10
Maximum number of pages for out-of-the-box model processing 30
Maximum file size for digitization160 MB
Maximum pages per document for digitization500 pages
Number of characters for the classification name
  • Minimum: 1
  • Maximum: 50
Number of characters for the classification description
  • Minimum: 0
  • Maximum: 2000
Number of characters in a document for classification
  • Minimum: 0
  • Maximum: 1e10 (virtually unlimited)
Number of of classifiers
  • Minimum: 1
  • Maximum: 50

Activity or API-based limits

DescriptionLimit
Supported file formats
  • PNG
  • JPG/JPEG
  • PDF
  • TIF/TIFF
Image size limits
  • Minimum: 50 x 50 pixels
  • Maximum: 10,000 x 10,000 pixels
Maximum file size for digitization160 MB
Maximum number of requests processed in parallel (a project version deployed in a modern project) 10
Maximum number of pages for out-of-the-box model processing 30 pages
Note: If you have 500 projects created on your tenant and use one of the following activities, any projects after 500 will not be visible in UiPath Studio or Studio Web and cannot be used:
  • Extract Document Data and Classify Document activities from the DocumentUnderstanding.Activities package.
  • Document Understanding Project Classifier and Document Understanding Project Extractor from the IntelligentOCR.Activities package.

Current limitations

Certain features are currently unavailable for modern projects:
  • Auto-fine tuning.
  • Classification fields.
  • Document tags (batches).
  • Project-based limits
  • Activity or API-based limits
  • Current limitations

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