Need to know about partially paid, paid and closed vendor invoice

I am using Dolibarr version 14, OS is windows 10 and PHP version 7.3

I have created a supplier invoice where I have paid 10 pound extra which I didn’t know but the supplier told me later and he discounted that price in my later vendor invoice. So in my system when I created the second vendor invoice then at first I made payment by clicking enter payment button and then clicked Partially paid button and select the 10 dollar as a discount on popup.

Now that invoice is showing partially paid and showing remaining unpaid in credit transfer tab under that invoice which is not logically because the invoice is settled.

InvoiceSupplier-CreditTransfer

Vendor-invoice-Card 2

Also what is the meaning of closed and paid vendor invoice?

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