Challenges Faced in Blue Prism with Solutions

Introduction

Blue Prism is a dominant player in the realm of Robotic Process Automation (RPA), providing enterprises with a safe and scalable digital workforce. Nevertheless, the leap from automation fundamentals to designing a sturdy enterprise robot is not easy. The developers have to deal with problems such as dynamic object spying, scalability of exception handling, and credentials management. Solving these problems takes more than simply knowing the basics of the Blue Prism Studio interface; it also involves a comprehensive knowledge of Blue Prism architecture and industry standards. Learning how to solve these problems will turn you into an effective RPA architect and enabler of digital transformation. 

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Blue Prism Challenges and Solutions for Freshers

By knowing these typical mistakes early on, you can avoid making them when creating digital workers. Below is an overview of the five major challenges newbies encounter in Blue Prism and the industry-standard ways to solve them.

1. Handling Dynamic Application Interfaces

The Challenge: While creating objects using the Application Modeller, freshers tend to use default attributes.

• The Breakage: Frequent updates of applications lead to the change of element IDs, Window Titles, and/or HTML Paths.
• The Impact: The bot is unable to find the target object in production and throws an error saying “Element not found”.

The Solution:

• Deselect Volatile Attributes: Untick volatile attributes like URL path, ID, or window size in the Application Modeller.
• Use Wildcards: Use wildcards (*) for Window Titles and dynamic text fields to make sure that the bot will recognize the application even if the name of the document or its version has changed.
• Use Match Index: Use the Match Index or Match Reverse attribute to identify elements in the repetitive table or list.

2. Overusing Surface Automation

The Challenge: Surface Automation comes naturally since it uses intuitive methods such as image recognition, global mouse clicks, or screen coordinates to control applications.

• The Pitfall: Surface Automation is extremely fragile. A minor change in screen resolution, a Windows update, or display scaling would render the bot completely unusable.

The Solution: 

• Prioritize Native Spying: Prioritize native spying modes every time – specifically HTML mode for web applications and Win32, Active Accessibility (AA), or UI Automation (UIA) for desktop applications.
• Last Resort Protocol: Use Surface Automation exclusively for applications run by Citrix or remote desktop sessions where the application’s underlying code is truly invisible to Blue Prism.

3. Confusing System and Business Exceptions

The Challenge: Freshers tend to put all types of exceptions in one “Recovery and Retry” block without caring about the cause of the problem.

• Risk: The handling of an invalid account number (a business exception) the same way as a network timeout (a system exception) results in infinite retries or the processing of invalid data.

The Solutions:

• Business Exception Handling: Violation of the rules (missing information, for example) must stop the process, set the Work Queue element as Exception, and process the next element in the queue.
• System Exception Handling: Environment failure (application crash, for example) must lead to environment shutdown, and the system must restart with a finite number of retries (typically three times).

4. Mismanaging Data Item Scope

The Challenge: To easily access variables, newbies tend to configure all Data Items as “Global” in visibility on the Main Page of a process.

• The Danger: Global data exists for the whole session. If a variable (for instance, the name of a client or the amount of a transaction) is not explicitly cleaned up, data from transaction A will inadvertently interfere with transaction B.

The Solutions:

• Scope It Down: Keep Data Items fully scoped to their respective pages as much as you can.
• Parameter Passes: Transfer needed data via Input and Output parameters between pages and Business Objects.
• Clean Up: Always clean up data collections and sensitive variables after each Work Queue item iteration.

5. Improper Work Queue Management

The Challenge: It is common practice among beginners to pull data from an Excel sheet and process it within a loop, without using Blue Prism’s inbuilt Work Queues at all.

• The Problem: If your bot crashes in between processing 500 rows in an Excel sheet, it will not be able to resume its work. All the benefits of reporting, concurrency, and retries are lost.

The Solutions: 

• Always use Queues: Build a rigid structure of a Dispatcher/Performer. One process just needs to dispatch items to the Work Queue (Dispatcher), while another does the actual work (Performer).
• Lock and Mark: It is always recommended to use “Get Next Item” to lock the item and end all the paths in either a “Mark Completed” or “Mark Exception”.

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Blue Prism Challenges and Solutions for Experienced Candidates

The following outlines the top 5 complex issues that the Blue Prism experts encounter along with their respective standard architecture solutions to address these issues.

6. Multi-Bot Concurrency and Queue Contention

The Challenge: Large-scale processing through several runtime resources results in the occurrence of race conditions, database deadlocks, or improper resource usage when many bots try to access the same Work Queue at once.

Solutions:

• Tag-Based Work Assignment: Apply tag-based queue filtering dynamically (Get Next Item with tags) to assign tasks according to specific expertise or system capacity, not using plain FIFO queues.
• Apply Deferrals and Retry Intervals: Make effective use of item deferral locks in order to avoid the endless contest for locked items between performer bots during high-latency windows.
• Data Separation: Move large data items out to external databases or clouds and keep just the minimum required references to those items in Blue Prism Work Queues.

7. Automating Unstable Virtualized Environments (Citrix/VDI)

The Challenge: Running applications within Citrix or Virtual Desktop environments does not have built-in accessibility through DOM/ UI elements and requires the use of unreliable surface automation prone to breakage in the presence of display resolution shifts and network latency.

The Solution: 

• Enforce Fixed VDI Profiles: Ensure fixed display resolutions, color depth, and DPI scaling settings for all runtime resource VMs using Active Directory Group Policy Objects (GPO).
• Dynamic Anchor Spying: Use advanced Optical Character Recognition engines (like Tesseract or OmniPage) with dynamic image anchors and relative search areas instead of fixed screen coordinates.
• Surface Automation Error Safeguards: Use explicit global wait states before issuing keystroke/mouse click commands through image buffer verification checks.

8. Enterprise Secret Management and Zero-Trust Security

The Challenge: Reliance only on the internal Credential Manager of Blue Prism breaks Zero Trust policy of the enterprise by not providing dynamic secrets rotation and centralized secret management.

The Solution: 

• Integrating External Secret Managers: Integrate Blue Prism with enterprise secret managers such as CyberArk AIM or Azure Key Vault via REST or VBO.
• Zero Persistence Secrets Management: Extract secrets dynamically from memory at the beginning of the transaction and destroy them after instant usage without saving anywhere.
• Obfuscation: Obfuscate sensitive data by applying transformations in a custom code stage that masks outputs of the operation.

9. Custom C# / .NET Code Stage Instability and Memory Leaks

The Challenge: Visual Business Objects that depend on Inline C# and VB.NET Code Stages can raise unhandled exceptions and memory leak issues, causing the parent AutomateC.exe application to crash unexpectedly and unexpectedly.

The Solution: 

• Use Compiled External Libraries: Instead of writing complex logic inline in VBOs in Blue Prism, write your logic externally in C# code as compiled libraries.
• IDisposable Mechanism: Use using statements and explicitly invoke the garbage collector (GC.Collect() for unmanaged COM objects or memory-intensive API streams.
• Unit Testing: Test the custom code packages in the Visual Studio environment and then integrate them with Blue Prism.

10. Automated CI/CD Pipelines and Deployment Collisions

The Challenge: The manual handling of .bprelease in DEV, QA, and PROD environments causes release collisions, environment variable slips, and dependency breaks.

The Solution:

• Automation through CLI Commands: Automate releases, update dynamic variables, and run database scripts using command-line utilities such as AutomateC.exe or through Blue Prism APIs via Azure DevOps or Jenkins.
• Static Code Analysis Tools: Create XML tools for static code analysis that check for hard-coded credentials, uncaught exception flows, and unused data items before promotion to next stages.
• Feature-Flagged Design: Design processes with toggles in the database that allow enabling/disabling new features at deployment time to production without having to deploy them ON.

Conclusion

Although Blue Prism offers revolutionary automation solutions, many companies find themselves in situations where they need to tackle problems such as expensive entry costs, complicated integrations, and maintenance challenges. Through a careful implementation process, creation of the Center of Excellence, and emphasis on designing scalability, organizations can successfully deal with these obstacles and make sure that their RPA investment yields maximum benefits. This process calls for specific competencies and experience. Want to get ahead in robotic process automation? Enroll today at our top-tier software training institute in Chennai for Blue Prism certification and automation skills!