Issue with Smartsheet Update Row Activity - "Unable to Parse Request"

[shital.sahare (Shital Sahare Kare)]

Hi Everyone,

I am facing an issue with the Update Row activity in UiPath Smartsheet integration. While attempting to update a specific cell’s value in a row, I am encountering the following error:

Update Row: Bad Request - Often due to a missing request parameter  
RequestId: 677d5817e4b0f00701dcae17  
ProviderMessage: refId - 8afd2420-e57e-4fac-b2b6-eacb5d1a7ee1, errorCode - 1008, message - Unable to parse request.

Here are some key details:

• The Sheet ID and Row ID are passed correctly.
• The Result (CellItem) is generated using an Invoke Code activity.
• My connection is working because other Smartsheet activities (e.g., reading data, downloading attachments) are functioning as expected.

Code Used to Create CellItem:

' Step 1: Create the cell item
Dim cellItem As New Sheets_rowsCellsArrayItemRef With {
    .ColumnId = 6249262680958852,
    .DisplayValue = "Test",
    .Strict = False,
    .Value = "Test" 
}
Result = cellItem

' Step 2: Create Sheets_rowsCells
Dim cells As New UiPath.Smartsheet.IntegrationService.Client.Sheets_rowsCells From { Result }

' Step 3: Serialize and Log the Resulting Object
Dim jsonString As String = Newtonsoft.Json.JsonConvert.SerializeObject(cells)
Console.WriteLine(jsonString)

Logs:

• Serialized JSON:

[{"columnId":6249262680958852,"displayValue":"Test","strict":false,"value":"Test"}]

• Result Object:

Sheets_rowsCellsArrayItemRef { 
    AdditionalProperties = Dictionary<string, object>(0) { }, 
    ColumnId = 6249262680958852, 
    ColumnType = null, 
    ConditionalFormat = null, 
    DisplayValue = "Test", 
    Format = null, 
    Formula = null, 
    Hyperlink = null, 
    Image = null, 
    LinkInFromCell = null, 
    LinksOutToCells = null, 
    ObjectValue = null, 
    OverrideValidation = null, 
    Strict = false, 
    Value = "Test" 
}

I’ve attached a screenshot for reference

.
If anyone has experienced this issue or knows how to resolve it, your help would be greatly appreciated!

Thank you!