A customer has reported that since the infrastructure rollout on July 15th they have had significant numbers of HTTP 429 errors at 8AM UTC daily on accounts/applications that are nowhere near their configured limits and no corresponding usage alerts are raised in the admin portal.

I can find no records in Kibana of anything relating to limiting issues during those time-frames either

Do we have any scheduled jobs or similar happening at that time?
Anything else we're aware of that could be causing this?