# Glossary | Term | Description | | --- | --- | | Credential | A digital credential, format can be ISO (mdoc) or SD-JWT | | Credential Type | An identifier that uniquely identifies the type of a Credential. (docType in ISO, vct in SD-JWT) | | Credential Type metadata | A metadata document that describes the Credential. (SD-JWT VC Type metadata spec) | | Credential Presentation Data | NL-Wallet internal format, to store attributes (stemming from Credentials) in a format-agnostic way. | | Status List | A digitally signed document that describes the rovcation revocation status for a set of credentials. (Token Status List spec) | | Update Policy | A policy describing app versions, information messages and m | | Issuance Event | An event in the log that informs the user about (attempted) issuances of a Credentials | | Disclosure Event | An event in the log that informs the user about (attempted) disclosures of Credentials | | Verifier-Certificate | Identifies a party that acts as verifier in a disclosure session with the Wallet-App | | Issuer-Certificate | Identifies a party that acts as issuer in an issuance session with the Wallet-App |