INVALID_ARGUMENT error on YoutubeDataApi PlaylistItem:update

Since the end of May, suddenly an error occurs when executing YouTube data api (PlaylistItem:update).Until then, there was no error.

[Request]{ "id": "*correct id*", "snippet": { "playlistId": "*correct playlistId*", "resourceId": { "kind": "youtube#video", "videoId": "*correct videoId*" }, position:0 } }

[Response(Error)]{ "error": { "code": 400, "message": "Request contains an invalid argument.", "errors": [ { "message": "Request contains an invalid argument.", "domain": "global", "reason": "badRequest" } ], "status": "INVALID_ARGUMENT" } }

• Trying on a different playlist　-> Same error occurs.
• Execute other API　-> PlaylistItem:list no error occurs.