Once the invoice for the entire order has been created, the vendor can make a request for payment from his vendor panel.
Goto Vendor Panel > Transactions > Requested Transaction
Total Pending Amount: The total amount that is payable to the vendor
Total Requested Amount: The total amount that has been requested by the vendor.
Total Cancelled Amount: The total order amount from cancellations.
To make a request for payment click on the “Request” button in the action column.