The directory object quota limit for the Tenant has been exceeded

[hotants]

Hi Guys,

     I am not sure if this is the right place for a query about Quota limit: what kinds of directory object will hit the quota limit.

     I have an Azure AD, at moment there are: 
     User:  63
     Applications: 592
     Groups: 336
     Service Principles: 400

     During my application running, about 800 new objects(most of them are groups) will be created,  but it will occasionally raise the exception when I tried to create group.  Be noted that after running, those newly objected will be deleted.

     Here are few questions to be clarified:
    1. How can I know the quota limit for an AD tenant?
    2. What else object types would count to the quota limit besides object types above?

Microsoft.Azure.ActiveDirectory.GraphClient: 2.1.1
AD Tenant: 464b54f9-3dcb-4e4a-a619-fe3511dc9f83

Thanks
Hotants