---
title: issuerKeyIdentifiers
framework: IdentityDocumentServices
role: symbol
role_heading: Instance Property
platforms: [iOS 27.0+, iPadOS 27.0+, macOS 27.0+]
path: identitydocumentservices/iso18013mobiledocumentrequest/documentrequest/issuerkeyidentifiers
---

# issuerKeyIdentifiers

A list of X.509 authority key identifiers corresponding to the issuer certificates accepted by the relying party.

## Declaration

```swift
var issuerKeyIdentifiers: [Data]
```

## Discussion

Discussion An empty list means any document signer certificate is acceptable. warning: The number of issuer key identifiers must not exceed 1,000 and the size of each identifier must not exceed 64 bytes.