<!--
{
  "documentType" : "article",
  "framework" : "AssetsLibrary",
  "identifier" : "/documentation/AssetsLibrary/error-domain",
  "metadataVersion" : "0.1.0",
  "role" : "collectionGroup",
  "title" : "Error Domain"
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-->

# Error Domain

Constant for the AssetsLibrary domain.

## Topics

### Constants

[`extern NSString * const ALAssetsLibraryErrorDomain;`](/documentation/AssetsLibrary/ALAssetsLibraryErrorDomain)

Constant used by <doc://com.apple.documentation/documentation/Foundation/NSError> to distinguish errors belonging to the AssetsLibrary domain.


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