Hello @Sean Killeen , the code looks fine, just to be sure we're not missing anything try using the custom-policy-manager, which relies on MS Graph Beta too. If that fails then you need to raise an issue through B2C support.
Does the Azure AD B2C Graph endpoint support UTF-8 charset for uploading policies?

I have a custom policy XML document that contains characters that need UTF-8 to be rendered correctly (A country name of Curaçao)
When I manually run my CI scripts which use UTF-8 and upload the policy to Azure B2C's UI, I see the characters as expected.
However, despite reading the file using the UTF-8 encoding, when I call the graph.microsoft.com/beta/trustframework/policies/
endpoint for my PUT request, the resulting policy appears to not be rendered using UTF-8.
I have attempted the following for my content headers
-
$headers.Add("Content-Type", 'application/xml')
-- the original, where I first saw the problem -
$headers.Add("Content-Type", 'application/xml; charset=UTF-8')
-- no change -
$headers.Add("Content-Type", 'application/xml; charset="UTF-8"')
-- 500 error from server -
$headers.Add("Content-Type", 'application/xml; charset=utf-8')
-- successfully completes, but no change; see the same issue
Any thoughts? I'm sure it must be something I'm missing.
The full powershell excerpt of what I'm doing:
$headers = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"
$headers.Add("Content-Type", 'application/xml; charset=utf-8')
$headers.Add("Authorization", 'Bearer ' + $token)
$graphuri = 'https://graph.microsoft.com/beta/trustframework/policies/' + $PolicyId + '/$value'
$policycontent = Get-Content $PathToFile -Encoding UTF8
$response = Invoke-RestMethod -Uri $graphuri -Method Put -Body $policycontent -Headers $headers
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Alfredo Revilla (Personal Account) 391 Reputation points
2021-10-20T14:57:01.467+00:00