Validation Error BC31424

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1

I am getting this below error while to debug the flow
Error ERROR Validation Error BC31424: Type ‘System.Data.DataRow’ in assembly ‘a90ef2e5-aedc-4fda-9b6f-a490514b9463, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null’ has been forwarded to assembly ‘System.Data.Common, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a’. Either a reference to ‘System.Data.Common, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a’ is missing from your project or the type ‘System.Data.DataRow’ is missing from assembly ‘System.Data.Common, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a’. Framework/SetTransactionStatus.xaml

Please help me with the above issue I am using UiPath Studio version 2025.0.167 STS

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2

@Raghuveer_M,

Try adding System.Data.Common as reference to your workflow file.

3

Hi @Raghuveer_M

Open UiPath project > Go to Imports panel
Add System.Data and System.Data.Common

Happy Automation

4

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image339×279 8.1 KB

The image shows a Data Manager interface listing imported namespaces such as System.Data, System.Diagnostics, and others. (Captioned by AI)
The image shows a Data Manager interface listing imported namespaces such as System.Data, System.Diagnostics, and others. (Captioned by AI)399×280 7.96 KB

Have added both in the imported namespaces but still getting error. Please help.

5

Hi @Raghuveer_M

Could you please run project validation from under workflow analyzer option under design menu tab? UiPath will automatically try to fix dependency issues.

And then close and reopen the project and run the validation again and observe.

If error still persists, delete the datatable variable and recreate it.

6

I am still getting the error even after running the Project Validation under workflow analyzer. I cannot delete the datatable variable as I have to use in the project.

7

Can you provide the project or the part of the project (archived in a zip file) that can replicate the issue?

Until then, check this article https://uipath.my.salesforce-sites.com/CaseView/articles/Knowledge/error-BC30369-Cannot-refer-to-an-instance-member-of-a-class-from-within-a-shared-method-or-shared-member-initializer-without-an-explicit-instance-of-the-class?lang=en_US

8

Thank you Sir for the response. I will share my project for your reference.

Calculate_ClientSecurityHash.zip (975.2 KB)

9

Argument 'Value': BC31424: Type 'System.Data.DataRow' in assembly '94fcf960-d388-40bb-a8c7-c69995b0eccd, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' has been forwarded to assembly 'System.Data.Common, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. Either a reference to 'System.Data.Common, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' is missing from your project or the type 'System.Data.DataRow' is missing from assembly 'System.Data.Common, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.

The error you’re seeing—BC31424—is related to type forwarding in .NET. It means that the type System.Data.DataRow has been moved from one assembly to another, and your project is either missing a reference to the new assembly or the type isn’t available where it’s expected.

I observed that your issue occurred in the Framework/SetTransactionStatus.xaml file after uncommenting the Assign activity for
QueueRetry (System.Boolean) which is tried to be assigned to in_TransactionItem isNot Nothing AndAlso (in_TransactionItem.GetType is GetType(UiPath.Core.QueueItem))

Approach #1
Try to delete the impacted Assign activity in the Framework/SetTransactionStatus.xaml for System Exception sequence.

Recreate from scratch a new Assign activity for QueueRetry with value

in_TransactionItem isNot Nothing AndAlso (in_TransactionItem.GetType is GetType(UiPath.Core.QueueItem))

→ disable activity → retry to Debug.

Approach #2

Try to access Framework/SetTransactionStatus.xaml → uncommend the impacted Assign activity for QueueRetry → access Data Manager → Namespaces → add System.Data and System.Data.Common → retry to Debug

The image shows a software interface containing a structured workflow design with a file manager on the left, a sequence editor in the middle, and an output/error tracking console at the bottom. (Captioned by AI)
The image shows a software interface containing a structured workflow design with a file manager on the left, a sequence editor in the middle, and an output/error tracking console at the bottom. (Captioned by AI)2473×1190 116 KB

The image displays a software development interface with a workflow structure and various tools for setting transactions and handling system exceptions. (Captioned by AI)
The image displays a software development interface with a workflow structure and various tools for setting transactions and handling system exceptions. (Captioned by AI)2433×1122 112 KB

After this, the Debug can be started:

The image shows a debugging interface with a highlighted output panel indicating the start of project execution and initialization details. (Captioned by AI)
The image shows a debugging interface with a highlighted output panel indicating the start of project execution and initialization details. (Captioned by AI)1276×896 19.8 KB

Let me know if this helped.