RPA Blue Prism Exception Hanling | Become a Blue Prism Developer | NGI Technologies

Exception handling in Blue Prism is a critical aspect of building robust and reliable automation processes. It involves identifying, managing, and resolving errors or exceptions that occur during the execution of your automation workflows. Here's a comprehensive overview:
Types of Exceptions
Business Exceptions:
Occur due to business-related issues, such as invalid data or unmet business rules.
Example: An invoice number is missing from a record.
System Exceptions:
Occur due to system-related issues, such as application crashes or connectivity problems.
Example: A web service is unavailable.
Exception Handling Stages
Recover:
Used to capture an exception and halt the current flow of execution.
Marks the start of an exception handling block.
Resume:
Used to continue the execution after an exception has been handled.
Marks the end of an exception handling block.
Exception:
Used to explicitly raise an exception.
Can include a custom exception message.
End:
Used to end the flow when an exception cannot be handled and the process must be stopped.
Implementing Exception Handling
Identify Potential Exceptions:
Determine where exceptions might occur in your process.
Example: When interacting with an external system or processing user input.
Use Recover and Resume Stages:
Place a Recover stage at points where exceptions might occur.
Follow it with a Resume stage to continue the flow after handling the exception.
Custom Exception Handling:
Use the Exception stage to raise custom exceptions with meaningful messages.
Example: Raise a "Missing Data" exception if required data is missing.
Logging and Notifications:
Log exceptions to provide a detailed record of what went wrong.
Use notifications (e.g., email alerts) to inform stakeholders about critical issues.
Example: Handling a System Exception
Recover:
Place a Recover stage at the start of the section where a system exception might occur.
Capture the exception and log it.
Exception Handling Logic:
Perform actions to handle the exception, such as retrying the operation or performing an alternative action.
Resume:
Use a Resume stage to continue the process after handling the exception.
Recover -[Log Exception]- Exception Handling Logic --[Alternative Action]--Resume
Best Practices
Modular Design: Design your workflows in a modular way, with separate exception handling blocks for different parts of the process.
Meaningful Messages: Include detailed and meaningful messages in your exception logs to make troubleshooting easier.
Consistent Handling: Use consistent exception handling strategies across your workflows to maintain uniformity.
Exception handling ensures that your automation processes are resilient and can gracefully manage unexpected situations. By implementing robust exception handling mechanisms, you can minimize downtime and improve the reliability of your automated solutions.
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