Saga pattern is lack of Isolation characteristics. We can use optimistic lock or versioning techniques to full fill.

Let's imagine, Uber Driver uploads Location, this request is being processed, but after few seconds, driver cancels previous request, it may happen Upload request will override the Cancelation request if Upload request is processed longer than Cancelation one.

Additionally, Transaction Consistency is separated into two types: Transactional consistency & Eventually consistence, which will depend on the business.