Sending:

{"registerUploadRequest":{"owner":"12345667","recipes":["urn:li:digitalmediaRecipe:feedshare-document"],"serviceRelationships":[{"relationshipType":"OWNER","identifier":"urn:li:userGeneratedContent"}],"supportedUploadMechanism":{"com.linkedin.digitalmedia.uploading.MultipartUploadMechanism":{}},"mediaType":"application\/pdf"}}

I keep getting this error:

{"status":403,"serviceErrorCode":100,"code":"ACCESS_DENIED","message":"Unpermitted fields present in REQUEST_BODY: Data Processing Exception while processing fields [/registerUploadRequest/mediaType]"}

I have tried many things, I have the w_member_social permission.

Is there anyone who knows more about this? Even AI gave up :-)