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  "availability" : [
    "iOS: 27.0.0 -",
    "iPadOS: 27.0.0 -",
    "macCatalyst: -"
  ],
  "documentType" : "symbol",
  "framework" : "IdentityDocumentServices",
  "identifier" : "/documentation/IdentityDocumentServices/MobileDocumentRegistration/init(mobileDocumentType:supportedIssuerKeyIdentifiers:supportedAuthorityKeyIdentifiers:documentIdentifier:invalidationDate:)",
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  },
  "title" : "init(mobileDocumentType:supportedIssuerKeyIdentifiers:supportedAuthorityKeyIdentifiers:documentIdentifier:invalidationDate:)"
}
-->

# init(mobileDocumentType:supportedIssuerKeyIdentifiers:supportedAuthorityKeyIdentifiers:documentIdentifier:invalidationDate:)

Initialize a mobile document registration with issuer key identifiers.

```
init(mobileDocumentType: String, supportedIssuerKeyIdentifiers: [Data], supportedAuthorityKeyIdentifiers: [Data], documentIdentifier: String = UUID().uuidString, invalidationDate: Date? = nil)
```

## Parameters

`mobileDocumentType`

The type of the mobile document.

`supportedIssuerKeyIdentifiers`

A list of X.509 authority key identifiers that correspond to the document signer certificate chain for the mobile document.

`supportedAuthorityKeyIdentifiers`

A list of authority key identifiers that correspond to relying party authorizers that are trusted by the document provider app.

`documentIdentifier`

An identifier that uniquely refers to the document that is registered. If not provided, a random unique identifier will be chosen.

`invalidationDate`

A date that indicates when this registration should be invalidated. This can be used in scenarios where the expiration time period of a document is known.

---

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