DE 44—ADDITIONAL RESPONSE DATA: Used to provide other supplementary data that is used in authorization and may be needed as a response to the authorization message.
The Card Authentication Results Code is sent in position 9, and the CAVV Result Code information is sent in position 15.
Card Authentication Result Code Values:
| Position | Value |
| Blank or not present | Card Authentication was not performed or some other situation prevented verification; for example, issuer processor is not a service participant or a system or cryptographic error occurred |
| 1 | The ARQC was checked but failed verification |
| 2 | The ARQC was checked and passed verification |
CAVV Result Code Values:
| Response Code | Description |
| 0 | CAVV not validated because erroneous data was submitted. |
| 1 | CAVV failed validation and authentication. |
| 2 | CAVV passed validation and authentication. |
| 3 | CAVV passed the validation attempt. |
| 4 | CAVV failed the validation attempt. |
| 6 | CAVV not validated because the issuer does not participate. |
| 7 | CAVV failed the validation attempt and the issuer is available. |
| 8 | CAVV passed the validation attempt and the issuer is available. |
| 9 | CAVV failed the validation attempt and the issuer is not available. |
| A | CAVV passed the validation attempt and the issuer is not available. |
| B | CAVV passed the validation with information only; no liability shift. |
| C | CAVV attempted but not validated; issuer did not return CAVV code. |
| D | CAVV not validated or authenticated; issuer did not return CAVV code. |
| I | Invalid security data. |
| U | Issuer does not participate or 3-D secure data was not used. |
| 99 | An unknown value was returned from the processor. |
