Hi @Bora ,
According to this Microsoft Document on Subscription Properties , while creating Subscription we have to provide changeType Property in request body that will indicate the type of change in the subscribed resource that will raise a change notification. We can give multiple values likes this "changeType":"created,updated,deleted"
.
Refer below screenshot for changeType Property:
You might have given only 'created' value for 'changeType' Property. Please verify that.
Hope this helps.
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