Sometimes we need to perform set of operations as a transaction which means if one operation fails in a set of operations, we have to roll back all the operations in that transaction. For example, in your Flow you are creating a record followed by update record, it is necessary that both of these operations should complete successfully otherwise you should not run any of them. Now, you can do such things using Changeset control of MS Flow.
As of now, you can perform Create, Update and Delete operations only (CDS) in Changeset request.
Note: Common Data Service(Current Environment) is visible only when you create a Flow inside a solution.
Try this feature….