After pooling all active line item entities for the account, I made the request to pool properties for each line item ID. But I see the error:
twitter_ads.error.NotFound: <NotFound object at 0x1aa1b52ad08 code=404 details=[{'code': 'NOT_FOUND', 'message': 'Line Item xxxxx was not found for Account xxxxx', 'parameter': 'line_item_id'}]>
I was told that line item belongs to a "First View" campaign.