The complete example error is:
2020-05-25 11:24:56.9254 ERROR (SystemConnector ba70db62-0143-45ab-a155-155fddc23e85) : Error committing object CN=Microsoft Exchange System Objects,DC=test-ad,DC=share-it,DC=ch.(Error: Error committing object a5cec94a-ab6c-4df6-97ab-63615ed4b98a.(Error: Error writing property vrtProtectedFromAccidentalDeletion. The modification will rerun after committing object.
1 write operations on properties were deferred and will be executed now.
Object method msexchsystemobjectscontainer_protectedfromaccidentaldeletion_Get is not allowed to execute using object type DirectoryEntryExtensionProperties.
Property vrtProtectedFromAccidentalDeletion will be set.
Object method msexchsystemobjectscontainer_protectedfromaccidentaldeletion_Set_Replace is not allowed to execute using object type DirectoryEntryExtensionProperties.
Error writing one or more properties of object.
Object not committed successfully.
For write sync operations, directory extension methods should be applicable to all derived classes.
This is a product defect (33120).
This will be fixed on a future release of the product. If you require this immediately corrected, please contact support for a hotfix referencing the defect ID 33120.