Verification codes

Verification codes

Verification codes describe the checks D1 performs on data provided by the token requestor and the Issuer.

Code groups

D1 groups verification codes into the following categories:

• Token requestor: checks data provided by the token requestor.
• End user name: checks the end user name against the cardholder name.
• End user billing address: checks the billing address provided by the wallet against the billing address provided by the Issuer.
• End user phone number: checks the phone number provided by the wallet against the phone number provided by the Issuer.
• End user language: checks the language provided by the wallet against the language provided by the Issuer.
• End user localization: checks the localization provided by the wallet, including coordinates and IP address, against localization data derived from the billing address provided by the Issuer.

The following table lists all verification codes.

Code structure

A verification code uses a prefix to identify the data source:

• TR_: the data is provided by the token requestor.
• ISS_: the data is provided by the Issuer.
• No prefix: D1 compares data provided by both the token requestor and the Issuer.

A verification code uses a suffix to identify the result:

• UNAVAILABLE: the data is not available.
• MATCH: both values are provided and match.
• NO_MATCH: both values are provided and do not match.
• PARTIAL_MATCH: both values are provided and only part of the data matches.
• INVALID: the data is available, but its format is invalid.

Verification code	Category
TR_RECOMMENDATION-UNAVAILABLE TR_DEVICE_SCORE-UNAVAILABLE TR_ACCOUNT_SCORE-UNAVAILABLE	Token requestor
NAME-MATCH NAME-NO_MATCH NAME-PARTIAL_MATCH TR_NAME-UNAVAILABLE	End user name
ADDRESS-MATCH ADDRESS-NO_MATCH ADDRESS-PARTIAL_MATCH ADDRESS_LINE1-NO_MATCH ADDRESS_LINE2-NO_MATCH ADDRESS_ZIPCODE-NO_MATCH ADDRESS_COUNTRYCODE-NO_MATCH TR_ADDRESS-UNAVAILABLE TR_ADDRESS-INVALID ISS_ADDRESS-UNAVAILABLE ISS_ADDRESS-INVALID	End user billing address
PHONE_NUMBER-PARTIAL_MATCH PHONE_NUMBER-MATCH PHONE_NUMBER-NO_MATCH TR_PHONE_NUMBER-UNAVAILABLE TR_PHONE_NUMBER-INVALID ISS_PHONE_NUMBER-UNAVAILABLE ISS_PHONE_NUMBER-INVALID	End user phone number
LANGUAGE-MATCH LANGUAGE-NO_MATCH TR_LANGUAGE-UNAVAILABLE TR_LANGUAGE-INVALID ISS_LANGUAGE-UNAVAILABLE ISS_LANGUAGE-INVALID	End user language
LOCALIZATION-MATCH LOCALIZATION-NO_MATCH LOCALIZATION-PARTIAL_MATCH TR_LOCALIZATION-UNAVAILABLE TR_LOCALIZATION-INVALID ISS_LOCALIZATION-UNAVAILABLE ISS_LOCALIZATION-INVALID TR_IPADDRESS-UNAVAILABLE TR_IPADDRESS-INVALID	End user localization

The quality of the verifications depends on the data made available by both the wallet and the Issuer.