You can fully track the components that go inside the WO and the finished good that these components produce. You can also track the receipt of the components (from the supplier) and the shipment of the components (to the client).
When you receive components from the Supplier, the remarks field needs to be entered at the PO level. The resulting Goods In document will have the same remarks. You can track this from the list of your purchase documents.
When you allocate the components inside a Work Order, you can there add the S/N in the place of the remarks field. See:
and you can track those S/N for the components from the list of the Work Orders. See:
When you receive the finished good inside a Work Order, you can add the S/N of the received finished good. See:
The S/N of the finished goods can be tracked from the list of your Finished Good Receipts. See:
The list of your finished good receipts can be found by clicking on MANUFACTURE and then click on the bookmark card that displays them.
If you can't find this card, check if you have moved it to the Hidden Bookmark Cards. If it looks that such card doesn't exist in your account at all, you can easily create a new one.
Click on Add Bookmark Card and then select Finished Good Receipts from the type options: