Vendor Invoice
Vendor Invoice: records what a vendor bills, either against goods already received on a purchase order or freely against expense accounts, and puts the amount on the vendor's account.
Vendor Invoice Memo
Vendor Invoice Memo: the debit note to a vendor, freely or against a purchase return, that reduces what you owe.
Batch Posting
Batch Posting: posts many parked vendor invoices, debit notes or payments in one save.