The Billing flow “NetSuite Billing to Magento Invoice Add” data flow exports Invoices from NetSuite to Magento. The data flow exports fully/partially billed orders in NetSuite as invoices in Magento.
STEPS
1.Generate cash sale from Item Fulfillment in NetSuite.
2.Restrict the saved search criteria with ‘eTail Order Billing exported’
3. Perform mapping in the flow as shown below.

4.Then run the flow and checking invoices in Magento we can see that the Billing sync is done.