With transactional replication, replicated data should be treated as read-only; however, you can modify replicated data at a Microsoft SQL Server Subscriber by using updatable subscriptions. If you need to modify data at the Subscriber, choose one of the following options depending on your requirements.
Updatable Subscription Type
Publisher and Subscriber must be connected to update data at the Subscriber.
Publisher and Subscriber do not have to be connected to update data at the Subscriber. Updates can be made while offline, and later synchronized between the Publisher and Subscriber.