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Dynamics 365 - API calls limit

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Posted on by nejcb

Hello there,

we are using Dynamics 365 as a central user database for a few of our web portals. When a user logs in to (one of) our portal(s), there is server2server connection in background using WebAPI, that checks the user credentials/permissions, licences etc.., that are stored in a database in Dynamics. A connection to Dynamics 365 is made as a user impersonalization, using Dynamics 365 Sales Enterprise licence.

Today one of a sudden, we started receiving the error "too many requests" from Dynamics CRM and i believe we hit the API calls limit.

Reading this article, i believe the limit is set to 20.000 API calls/24hrs: https://docs.microsoft.com/en-us/power-platform/admin/api-request-limits-allocations#microsoft-power-platform-requests-allocations-based-on-licenses but after checking the stats for last 24 hours in Power Apps admin, i see that there were 265k API calls made.

It is confusing, as we are not sure what are the real limitations and how to avoid them. Is there any option to buy some "add-on" license which rises any limits on webapi communication?

Thank you.

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mequan on at

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RE: Dynamics 365 - API calls limit

Hi nejcb,

Good Day!

API limits expect that the application uses multiple threads to maximize performance. Each thread represents a separate connection and each connection is evaluated on a 5 minute (300 second) sliding window.there are three aspects that are measured.

When the limit is exceeded, all requests for the same connection will return error responses. So you didn't get any error message, you may use system without issues.

For more information of it, you may check from https://docs.microsoft.com/en-us/powerapps/developer/common-data-service/api-limits .

Thanks

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nejcb 5 on at

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RE: Dynamics 365 - API calls limit

Hello,

thank you for the answer.

My sub-question: the limits apply to all acoount types? I mean here non-interactive acc., application acc., .. ?

Thank you!

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mequan on at

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RE: Dynamics 365 - API calls limit

Hello nejcb,

As mentioned in Service Protection API Limits, plug-in or custom workflow activity do not need to apply these patterns because service protection limits are not applied in these cases. Because non-interactive user will do programmatic access, so it will not be impacted.

Thanks

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