Differences between v2 and v2.1 of the Order REST APIs

If your instance of Sitecore CDP is using the 2.1 data model, we recommend that you upgrade to REST APIs version 2.1 of the Order REST APIs. The APIs include:

Order REST API
Order item REST API
Order contact REST API
Order consumer REST API
Order data extension REST API
Order item data extension REST API

Here's an overview of the main differences between version 2 and version 2.1:

	v2	v2.1
URI paths	URI paths contain `/v2/`.	URI paths contain `/v2.1/`.
Endpoints for partial operations	Partial updates and partial deletions are not available. Updates and deletions affect the entire resource.	New `PATCH` endpoints let you partially update resources. For example, you can update certain key-value pairs in an order item data extension without affecting others. New `DELETE` endpoints let you delete certain key-value pairs from an order data extension or an order item data extension without affecting others.
Endpoints for order item data extensions	This version of the REST APIs does not have endpoints for order item data extensions. Working with order item data extensions is only available using the Batch API.	New endpoints let you work with order item data extensions. See examples of order items with data extensions you can create.
Data extension key-value pairs	You must manually include `"key":"default"` in the request body when you work with data extensions.	The `key` attribute is automatically set.
Order item types	The `type` of the order item must be one of a list of allowed values.	The `type` of the order item can be any value except for the following: `"FLIGHT"` `"HOTEL"` `"MORTGAGE"` `"MORTGAGE_APPLICATION"` `"LOAN_APPLICATION"` `"PERSONAL_LOAN"` `"RAIL"` See examples of order items you can create.

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