For title id D36D, appears to be with the server grant items API.
Not sure if there's anything we can do about this, or if it's just expected once in a while, but it seemed to be happening quite a bit for the last hour and then now it's mostly stopped. We don't have any player or server spikes at the moment, and generally over the last 2 years of using Playfab it's been quite rare to see it.
Thanks.