How to: Custom Orchestration for Bill now, ship later

Summary:

How to create a custom orchestration to bill now, ship later with the inventory remaining on-hand until the shipment is created?

We have a receipt at a warehouse trigger sales order creation. Currently, inventory leaves once the Sales Order is created. We'd like to have the sales order created, invoice created and billed, and then do the 'shipment' of the item and relieve inventory at a later date.

How to create a custom orchestration to achieve this?

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