We have added three new endpoints that allow you to manage the Tracking information of an existing Purchase Order. You can use these endpoints only if the Client Setting Enable Multiple Tracking Numbers On PO is enabled:
You can now use the Update Order Shipping Information REST API endpoint to update an order’s Promise Date (Ship-By-Date).
We have added a new endpoint to our REST API that allows you to Create a new SKU to SKU Transfer. 
We have added CurrencyRateFromUSD and CurrencyRateToUSD to the response for the Get Single Order endpoint. This provides you with the specific rates used to convert the currency for international orders.
We have added two new endpoints to our Rest API:
You can now Execute Rules on existing sales orders via our Rest API. Consuming this endpoint allows you to access our Order Rule Engine. Make sure you configure the rules within the web interface first.
You can now retrieve the Sales Rep ID and Sales Rep Email of your orders by calling the following endpoints:
You can now Add Customers to a Customer Group by consuming the newly added Rest API endpoint. Note that this will only work for existing Customers and Group.
We have added List Price to the response when calling the Get All Inventory Rest API endpoint, which allows you to retrieve inventory and product data for multiple SKUs at once.
