Hi @Krisztina Makovinyi
The bill is associated with the Azure subscription of the Azure Synapse or Azure Data Factory you are using. So you still need to pay for some Microsoft Graph objects even if you have a subscription to OneDrive. Following are some datasets available for free or are currently free
BasicDataSet_v0.User_v0
BasicDataSet_v0.User_v1
BasicDataSet_v0.MailboxSettings
BasicDataSet_v0.Manager
BasicDataSet_v0.DirectReport
BasicDataSet_v0.GroupDetails
BasicDataSet_v0.GroupMembers
BasicDataSet_v0.GroupOwners
For more details to reference
https://learn.microsoft.com/en-us/graph/data-connect-policies#billing
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