Change notifications for contacts are stopped receiving suddenly

Haveesha K 1 Reputation point

I had working subscriptions to get change notification of contacts but it has suddenly stopped. need a help on this ASAP

Microsoft Graph
Microsoft Graph
A Microsoft programmability model that exposes REST APIs and client libraries to access data on Microsoft 365 services.
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  1. Haveesha K 1 Reputation point

    I can get event change notification and lifecycle notification , but can't get contact change notifications. it worked well before.