429 throttling even though I wait for each request to complete

Question

&nbsp;I am using the Graph API in SPFx (MSGraphClient).&nbsp;I need to add events to a user calendar (usually between 10 and 20 for the month). Unfortunately, https://docs.microsoft.com/en-us/graph/throttling#outlook-service-limits (!).&nbsp;To try and prevent concurrent events, I am executing the requests one at a time, with an await expression:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(let&nbsp;i&nbsp;=&nbsp;0;&nbsp;i&nbsp;&lt;&nbsp;locks.length;&nbsp;i++)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;let&nbsp;lock&nbsp;=&nbsp;locks[i];&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;await&nbsp;props.context.msGraphClientFactory.getClient()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.then((client:&nbsp;MSGraphClient😞&nbsp;void&nbsp;=&gt;&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;client&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.api("/me/events")&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.post({&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"subject":...&nbsp;This doesn't work, I am still getting 429 throttling message even though the requests are not concurrent. What am I missing here, and what would be the proper way to handle the situation?

christophe humbert · Answer

I have created a SPFx package that reproduces the issue:https://github.com/PathToSharePoint/Outlook-ThrottlingNote that it requires Graph API permissions.

maria-mendiburo · Answer

Hi Christophe - The SPFx team actively monitors this Github repo for questions, so I suggest posting your inquiry there: https://github.com/SharePoint/sp-dev-docs

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429 throttling even though I wait for each request to complete

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