In accounts payable when a purchase is made the invoice becomes a debit memo a debit to the vendors subsidiary account a credit memo or the basis for the credit to the vendors ledger?

In Accounts Payable, when a purchase is made, the invoice is recorded as a debit to the appropriate expense or asset account and a credit to the accounts payable liability account. The invoice itself does not become a debit memo; instead, it serves as the basis for the credit to the vendor's ledger when payment is made. A debit memo is typically used to adjust or reduce the amount owed to a vendor.