| ChallengeRequest | Challenge request class. A challenge request is the first step in Type 1 application-level security. Essentially, it asks for some random data from the server.The challenge response provides that server-generated random data and is the second step in Type 1 security. |
| ChallengeResponse | Challenge response class. |
| ChallengeTransactionRequest | Challenge transaction request class. |
| ChallengeTransactionResponse | Challenge transaction response class. |
| FinancialInstitution | Financial institution class. |
| MFAChallenge | Challenge question class. |
| MFAChallengeAnswer | Signon answers to challenge questions. |
| MFAChallengeRequest | MFA challenge request class. It is a request for the server to send a list of challenge questions that must be correctly answered before the OFX client may proceed with further OFX requests. |
| MFAChallengeResponse | MFA challenge response class. |
| MFAChallengeTransactionRequest | MFA challenge transaction request class |
| MFAChallengeTransactionResponse | MFA challenge transaction response class |
| PinChangeRequest | User password change request class. |
| PinChangeResponse | User password change response class. |
| PinChangeTransactionRequest | User password change transaction request class. |
| PinChangeTransactionResponse | User password change transaction response class. |
| SignonRequest | Signon request class. |
| SignonResponse | Signon response class. |
