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# supportedIssuerKeyIdentifiers

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

```
var supportedIssuerKeyIdentifiers: [Data]
```

## Discussion

An issuer key identifier is an authority key identifier from the document signer certificate chain.

> Warning: The number of issuer key identifiers must not exceed 1,000 and the size of each identifier must not exceed 64 bytes.

---

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