These are the terms you'll see most across the PayMitto docs. Each one links to the page that covers it in depth.

Term	Definition
Sender	The account holder sending money. Your backend creates one for each account holder and saves the `senderId`. See Senders overview.
Recipient	The person receiving the transfer. Account holders add recipients in the SDK.
Corridor	A combination of destination country, currency, and payout method. Corridors are configured per program and confirmed during implementation.
Quote	The price, rate, and fees the account holder accepts before sending. Each quote has a `quoteHistoryId`.
`quoteHistoryId`	The ID of an accepted quote. Your backend uses it to look up the quote, create the transfer, and check progress after a timeout. See Posting a transfer.
Client level access token	An access token requested without a `sender_id`. Used for client-wide calls, such as requesting an SLA token or listing transfers.
Sender level access token	An access token requested with a `sender_id`, used to act on behalf of one sender. See Authentication and sender ID.
SLA token	A short-lived, single-use token. Your backend requests it and the Web SDK exchanges it for a session. See Web SDK authentication.
SDK session	The Web SDK's authenticated session. It times out after a period of inactivity and extends while the account holder is active.
Transfer status update	A notification PayMitto sends to your endpoint when a transfer's status changes. See Transfer status updates.
Pending	A transfer that is in process. It can stay Pending while screening completes.
Complete	A transfer that PayMitto processed and sent for payout.
Remittance service provider (RSP)	The payout partner that delivers a transfer to the recipient.
Real Time Account Funding (RTAF)	A separate PayMitto solution that lets account holders fund a new account in real time from an external card. It uses an Account Funding Transaction (AFT) and is designed specifically for new account funding. See RTAF.
Account Funding Transaction (AFT)	A card transaction that pulls funds from a card. RTAF uses an AFT to fund a new account.
Original Credit Transaction (OCT)	A card transaction that pushes funds to a card. Account-to-card payouts use an OCT.
Sandbox	The test environment. Transfers there don't move real money. See Environments.
Certification	The test cases you complete with PayMitto before you receive production credentials. See Certification.
Admin Portal	PayMitto's portal for your operations and support staff, accessed with single sign-on. See Admin Portal overview.

Next steps

Once you've finished here, these pages are good places to go next:

Your first sandbox transfer: see these terms in action.
Implementation overview: the phases from credentials to go-live.