Performance issues sales order RESTAPI

Summary:

We have a sales order integration from Oracle WACS to Oracle Fusion Cloud Order Management using REST. Work orders created in WACS are interfaced as sales orders to the ERP, supporting creation, updates (quantity increases, date changes, line cancellations), and requiring synchronization within 5 minutes. If a sync request exceeds this time, it results in an error and undergoes multiple retries.

When processing large batches (e.g., over 1000 lines), the sync can loop due to timeouts. The system validates existing ISO lines, which can lead to additional retries and delays.

To improve performance during ISO creation and updates through the REST API, I’m seeking best practices.