Studo Fill Form AI Fill from JSON

Help Studio
1

In UiPath Studio Web how would I go about selecting 1…N checkboxes in this form:

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https://docs.google.com/forms/d/e/1FAIpQLSehOG_k7Xl_sRtqE8jmtqT7lreMXkjh_nndhyNZVSS03QKOlw/formResponse

I’m getting JSON from a REST API that is structured like so:

{
    "Select parts *": [
        "Part 1",
        "Part 3"
    ]
}

After getting the JSON I’m using the Deserialize JSON Web API activity to store the JSON in a variable and then using the data to power the Fill Form UI Automation activity.

However, I am getting the following error when trying to use the Fill Form UI Automation activity:

UiPath.Semantic.Activities.Exceptions.NoMatchingException: The system could not match the data source and the destination. Confirm that the data source and destination fields align, and check for any mismatches or inconsistencies.
at UiPath.Semantic.Activities.Services.SemanticActivityActionService.FillFormAsync(IFillFormData data, TimeoutToken token)
at UiPath.Semantic.Activities.NFillForm.ExecuteAsync(IActivityContextWrapper context, CancellationToken cancellationToken)
at UiPath.UIAutomationNext.Activities.RecoverableNativeActivity.ExecuteActivityAsync(IActivityContextWrapper contextWrapper, CancellationToken cancellationToken)
at UiPath.UIAutomationNext.Activities.RecoverableNativeActivity.ExecuteActivityAsync(IActivityContextWrapper contextWrapper, CancellationToken cancellationToken)
at UiPath.UIAutomationNext.Activities.RecoverableNativeActivity.ExecuteAsync(NativeActivityContext context, CancellationToken cancellationToken)
at UiPath.Shared.Activities.AsyncTaskNativeImplementation.BookmarkResumptionCallback(NativeActivityContext context, Object value)
at UiPath.Shared.Activities.AsyncTaskNativeActivity.BookmarkResumptionCallback(NativeActivityContext context, Bookmark bookmark, Object value)
at UiPath.Shared.Activities.ContinuableAsyncNativeActivity.BookmarkResumptionCallback(NativeActivityContext context, Bookmark bookmark, Object value)
at System.Activities.Runtime.BookmarkWorkItem.Execute(ActivityExecutor executor, BookmarkManager bookmarkManager)

Is there a better way to structure the JSON?

Any help would be appreciated.

Thanks,

Ben

2

Hi,

Probably, it’s necessary to set section name (question etc.) as JSON key.
In the above URL, the following input JSON will work

{
 "Which Options is the best": "Option 2"
}

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Regards,

3

Hi @ben.payne

The error happens because UiPath can’t match your JSON to the form fields. Make sure:

  • The JSON key exactly matches the checkbox field name ("Select parts *")
  • The values exactly match the checkbox labels on the form ("Part 1", "Part 3")
  • For multi-select, try passing a semicolon-separated string instead of an array, e.g.:
{ "Select parts *": "Part 1;Part 3" }

This should fix the mapping issue.