Tokenizing transactions using supplemental data

A resource provider computer comprising:

• a processor;
• and
• a non-transitory computer readable medium comprising code, executable by the processor, to perform operations comprising:
• receiving a credential from a user;
• transmitting, to a service provider computer, a token request message comprising the credential;
• receiving, from the service provider computer, a token response message comprising one or more supplemental data identifiers and one or more tokens associated with the one or more supplemental data identifiers, the one or more tokens linked to the credential;
• receiving, from the user, a selection of a supplemental data identifier;
• and
• transmitting, to the service provider computer, an authorization request message comprising a token of the one or more tokens, the token linked to the selected supplemental data identifier, and a value, wherein the service provider computer obtains the credential using the token and transmits, to an authorizing entity computer, a modified authorization request message comprising the credential, the value, and the supplemental data identifier.

A token service computer comprising:

• a processor;
• and
• a non-transitory computer readable medium comprising code, executable by the processor, to perform operations comprising receiving, from a service provider computer, a credential and one or more supplemental data identifiers;
• providing, to the service provider computer, one or more tokens linked to the one or more supplemental data identifiers, and the one or more supplemental data identifiers linked to one or more pieces of supplemental data;
• receiving, from the service provider computer, a de-tokenization request message comprising a selected token of the one or more tokens;
• and
• transmitting, to the service provider computer, the credential associated with the selected token.