Hi @briton,

Allow me to clear things up for you and share how this process works.

Your inventory gets updated right after you mark a bill with the inventory items as paid. To ensure that its correctly updated, I suggest making changes to the bill you've created from the initial PO. Base your changes from the invoice your vendor sent you, including shipping costs.

With this, you won't have any issues with your inventory since the update will depend on the actual items you've received from your vendor. The bill will also close without any discrepancies since the total amount you paid for matches with the invoice you received.

Further details on inventory management by buying and selling products is in this article: Buying and selling inventory.

I'll be here to provide further assistance. Should you require it, drop me a comment below and I'll get back to you.