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Set date to null on Startdate in Sharepoint Lists with "Send an http request to Sharepoint"

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Posted on by spiderkzn

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Hello,

I need your further assistant.

If the user remove the date, as I would like convert StartDate in SharePoint lists to null which it mean it should show blank.

So I'm using "Send an HTTP Request to SharePoint" which the method work fine. But the Body I'm using

{
"StartDate": "null"

}

it show the error:

Cannot convert a primitive value to the expected type 'Edm.DateTime'

How to I force this StartDate to null?

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Verified answer

Ellis Karim 12,288 Super User 2026 Season 2 on at

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Hi @spiderkzn ,

You could try the following, which clears the "EndDate" in this example:

_api/web/lists/GetByTitle('<List_Name>')/items(<Item_ID>)/validateUpdateListItem { "formValues": [ { "FieldName": "<Date_Column_name>", "FieldValue": "" } ] }

Ellis
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