We have a third-party Azure AD application that uses the Microsoft Graph API. This application has not been changed in Production for about 2 months, and so far we have not had any problems.
Since this morning, I can’t enter the application due to answers HTTP 429to Office 365 Graph API requests. This happens with endpoint requests /messagesand /people. See below a screenshot of the developer console:
Can anyone tell if there have been any recent changes to throttling restrictions in the Graph API?
I do not understand why this will suddenly begin if there are no changes in production in our application within a few months.