Create RMA order via API and add reference to original order

Summary:

Content (required):

We are creating RMA orders via API from our CRM system.

We would like to add reference to the original shipment order - same as shown if we create the return order directly in Oracle via the "return" button on the original order.

Is there an API to update the reference to the return order line?

Version (include the version you are using, if applicable):

23C

Code Snippet (add any code snippets that support your topic, if applicable):