Receving 503 and 504 error when calling calendarView/delta endpoint

Question

Hi, We are running into many issues when fetching /calendarView/delta. This doesn't happen to all of our customers, but it happens to some.

Here is the request information and we are using @odata.nextLink from the response data to construct the url

url=https://graph.microsoft.com/v1.0/me/calendars(omitted)/calendarView/delta?$deltatoken=xxx

Here is the response with their status code:

• 503
  • empty response
• 504
  • {"error":{"code":"UnknownError","message":"","innerError":{"date":"2023-08-01T13:51:19","request-id":"c33fc3f8-c3b3-410f-a38f-bf19524e92e1","client-request- id":"c33fc3f8-c3b3-410f-a38f-bf19524e92e1"}}}

I have seen other posts on this, and we are aware that:

• "You can retry the requests or increase the timeout (if you are using any custom application, increase the timeout for at least 2 minutes)."
  • we are setting the timeout to 2 minutes
    • We also have a back-off strategy in case it fails the first time.

Other notes:

• These errors are permanent - retrying minutes or hours later produces the same result.

Answer 1

Hi Kai,

Thanks for reaching out. This issue will require further investigation and I would suggest opening a support ticket for this issue.

Thanks.