Expression is invalid: Send HTTP Request to SharePoint

[RiccoHipp1903]

Hello guys, 

To empty a person Column I send a HTTP request to SharePoint but it keeps invalid.

What am I doing wrong?

I changed the Method to Merge and Patch... no difference
Anything google gives me on the first 2 pages, i tried (deleting accept header and and and)

Putting the URi in browser works. I get the item 

[ekarim2020]

Hi @RiccoHipp1903 ,

Please see:

Solved: Re: how to clear a person? - Power Platform Community (microsoft.com)

Ellis
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[annajhaveri]

@RiccoHipp1903 can you please try setting content-type and accept values as application/json;odata=nometadata

And in body just keep as below

{
"MitarbeiterId":-1
}