Adjustments can be posted manually in two ways:
While the order is open (via the Order Detail screen); and,
After the order closes (via the Accounting screen → Adjustments tab).
The adjustments displayed while searching this transaction type are those that are posted before the order is closed - also known as Open-Order Adjustments, which are always a credit to the client’s account. They are posted via the Order Detail screen, and can be posted to the order, or to specific charges on the order.