Throttling Error from Microsoft Graph Api, with very small volume in Azure B2C

kollipara 11 Reputation points
2020-12-10T15:12:08.597+00:00

We are facing strange issue . we are receiving 429 from Microsoft graph even for small volume of users.

Same code package was working fine till last week and all of sudden we are seeing 429 Too Many requests error from Graph Api event for small volume.

Please let us know if there is a know outage regarding the same.
We are using Azure B2C with Custom Policies where we invoke some graph calls during User Journey for fetching some data dueing journey.

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Microsoft Entra External ID
A modern identity solution for securing access to customer, citizen and partner-facing apps and services. It is the converged platform of Azure AD External Identities B2B and B2C. Replaces Azure Active Directory External Identities.
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Microsoft Entra ID
Microsoft Entra ID
A Microsoft Entra identity service that provides identity management and access control capabilities. Replaces Azure Active Directory.
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  1. James Hamil 21,851 Reputation points Microsoft Employee
    2020-12-18T01:01:22.27+00:00

    Hi @kollipara , We can't provide hard numbers for throttling as it varies depending on the scenario etc. In general, we recommend adding error handling for the 429 response code that indicates throttling has occurred and using back off logic using the Retry-After header. More info here: https://learn.microsoft.com/en-us/graph/throttling#best-practices-to-handle-throttling and https://learn.microsoft.com/en-us/graph/errors and https://github.com/microsoftgraph/msgraph-sdk-dotnet/blob/dev/docs/errors.md

    Hope this helps,
    James

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