How to configured a service order line(bill only) in the fusion?

Summary:

we want to create a sales order(line) without shipment, including some R&D service expense. how to confugure?

Content (please ensure you mask any confidential information):

our system can only create sales order which need to be shipped, then confirm revenue and invoices only after shipment.

the R&D service expense(bill only orchestration) cannot be reflected in the sales order.

we want to create this part in the sales order line, how to implementation?

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

Oracle Fusion Cloud Applications 25C

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