Updating a SharePoint Date and Time Column using "Send an HTTP an Request SharePoint" action

[PowerAppUser875]

I'm trying to update a SharePoint date and time column via the "Send an HTTP Request to SharePoint" action, and I'm struggling to get the formatting correct.  Does anyone have the correct syntax or can tell me what's wrong with this action?  Thanks!

[Expiscornovus · Accepted solution]

Hi @PowerAppUser875,

Could you try to change the body to this format? In other words, remove the curly brackets around the date time value.

{
  "__metadata": {
    "type": "SP.Data.@{variables('ListName')}ListItem"
  },
 "Title": "New title",
 "DateAssigned": "2020-11-24T18:39:05Z"
}

[PowerAppUser875]

Thanks!  I was at a total loss for what was wrong.  Such an obvious issue!