httpclient - Calling a REST API from Powershell - Stack Overflow

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I am calling a third party service provider REST call. The reset accept header called Version, which is supposed to be a string, and the string is base64 from a byte array. All POST, DELETE, PUT methods should provide a version in the header and the version should match the version on the server.

Calling URL is working from all types of clients except powershell 7.5.0 (not windows powershell, but powershell)

So, for example the version is = "AAAAAAAB1Z4="

In Swagger UI, I provide the header version as string value, and Swagger UI tells me that the Version header is a string And Swagger works fine

In postman I provide the version as string (without double quotes), and it is working fine.

In Curl in call this

curl --location --request DELETE '' \
--header 'CLIENT-ID: 124' \
--header 'Version: AAAAAAAB1Z4=' \
--header 'Authorization: Bearer ....' \
--data ''

And it is working

Using C# with HttpClient, and it is working

Except from Powershell

I do the following:

$version = "AAAAAAAB1Z4="    
$deleteHeaders = @{
            "Authorization" = $bearerToken
            "Content-Type"  = "application/json" 
            "CLIENT-ID" = "124"
            "Version" = $version 
        }

    $body = @"
    
    "@
    
    $response = Invoke-RestMethod '' -Method 'DELETE' -Headers $deleteheaders -Body $body

And this return error message

 The format of value 'AAAAAAAB1Z4=' is invalid.

I tried as well the following:

1. I tried to add ""application/json; charset=utf-8" as content-type, and the same problem

2. passing this value '"AAAAAAAB1Z4="' , (single quote outside double quote) and this will return a different error that the version doesn't match

Any idea?

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