====== Setting Up E-Commerce Replication ======

Having your data automatically replicated between Dynamics NAV and the Storefront is ensured by two separate processes.

**Change Tracking** in Dynamics NAV is responsible for //outgoing// data replication. It detects changes to the relevant records made by Dynamics NAV users, and registers the changes in a special "E-Commerce Replication Queue" table. Change Tracking process runs in the context of Dynamics NAV users alongside the regular actions they perform in Dynamics NAV, like changing Item cards or posting transactions with Items or Customers.

**Replication Service** is a Dynamics NAV Server background process responsible for transmitting the changes registered in the "E-Commerce Replication Queue" to the Storefront, and importing any new documents and events from the Storefront to Dynamics NAV. Replication Service also updates Replication Status page to enable monitoring.

===== Enable Change Tracking =====

To enable Change Tracking, open the **Replication Setup** page by using Search or **Departments / E-Commerce B2B** menu.

Enable Change Tracking by placing a checkmark in the **Enable Change Tracking** field.

**You must restart your Dynamics NAV Service in order for Change Tracking to activate.**

{{:admin:e-commerce_setup:change_tracking_enable.png?nolink|}}

===== Set Up the Replication Service =====

Replication Service process can be set up using three different methods. You may choose one according to your usage scenario.

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^ Method ^ Comments ^
| **[[admin:e-commerce_setup:setup_replication:nas_service|NAS Service]]** | Recommended for production environments. Requires IT administration tools and administrator access to NAV Server. |
| **[[admin:e-commerce_setup:setup_replication:background_session|Background Session]]** | The easiest way to get going, can be done by a NAV user from the NAV Client. Has some limitations though. |
| **[[admin:e-commerce_setup:setup_replication:job_queue|Job Queue]]** | An alternative to stick with the standard Dynamics NAV tools. |