UiPath-ADAv1 PDF Automation Practice Question
Exhibit
{
"activity": "Read PDF with OCR",
"parameters": {
"Range": "1-5",
"OCREngine": "Tesseract",
"Language": "English",
"Scale": 2
},
"error_log": "System.Exception: OCR Engine not found. Please verify the OCREngine package is installed and configured correctly."
}Refer to the exhibit. What is the most likely cause of the error in the workflow?
⚠ Common exam trap
Candidates often blame syntax errors or incorrect image file paths, overlooking the fact that OCR activities require specific NuGet packages to function.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The Tesseract OCR package is not installed in the project.
The error indicates that the Tesseract OCR engine library is missing from the project dependencies. UiPath projects require specific NuGet packages to support different OCR engines. Even if the activity is present in the workflow, the underlying engine must be installed via the Manage Packages window to perform recognition. This is a common deployment issue that highlights the need for proper dependency management when building PDF automation solutions.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The Scale parameter is set incorrectly.
Why it's wrong here
The Scale parameter affects image processing quality but does not trigger engine-level exceptions. An incorrect scale might result in poor text recognition quality or garbled output, but it will not prevent the engine from being located or initialized within the automation runtime environment.
- ✓
The Tesseract OCR package is not installed in the project.
Why this is correct
The error explicitly points to the inability to locate the engine. Tesseract is an external dependency that must be added to the UiPath project via the Package Manager. Without the package installed, the activity lacks the necessary binary files to perform character recognition on the provided document.
- ✗
The Range is invalid for the document.
Why it's wrong here
Invalid ranges typically result in execution exceptions related to index bounds or page numbers. They do not trigger system-level errors regarding the existence of the OCR engine itself. The error log specifically identifies the engine as the culprit, pointing away from document-specific content errors.
- ✗
The Language parameter is unsupported.
Why it's wrong here
Unsupported languages would result in character errors or gibberish output rather than a failure to find the OCR engine. The error message is very specific about the engine being missing, meaning the system cannot even instantiate the object required to begin processing the English language data.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official UiPath exam blueprint
This UiPath-ADAv1 practice question is part of Courseiva's free UiPath certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the UiPath-ADAv1 exam.