Item Transfer, or Inventory Transfer, is primarily used to transfer inventory items from a location (such as your warehouse) to a job. This action will reduce inventory and increase your cost of goods sold (COGS) for the items you transfer.
When you transfer items to a job using this form, you will NOT want to add those items to an invoice. That action would double your costs.
You might use this form when you have an ongoing job and wish to keep your financial and job costing report timely without waiting to create an invoice.