"Term for chargeback or debit memo" refers to a financial transaction where a customer disputes a charge on their credit card or bank account, resulting in a reversal of funds back to the customer. This process is often initiated by the customer's bank or financial institution.

"IMMEDIATE" is a term typically used in payment processing to indicate that a transaction should be settled promptly, without any delay. It could be related to various financial transactions, such as wire transfers or electronic payments, where the transfer of funds is requested to occur instantly.

These two terms operate in different contexts within finance. Chargebacks and debit memos are part of the dispute resolution process, while "IMMEDIATE" pertains to the speed at which a transaction is processed.