---
title: Metadata Identifier Error Codes
framework: coremedia
role: collectionGroup
role_heading: API Collection
path: coremedia/metadata-identifier-errors
---

# Metadata Identifier Error Codes

Error codes that indicate metadata identifier errors.

## Topics

### Constants

- [kCMMetadataIdentifierError_AllocationFailed](coremedia/kcmmetadataidentifiererror_allocationfailed.md)
- [kCMMetadataIdentifierError_BadIdentifier](coremedia/kcmmetadataidentifiererror_badidentifier.md)
- [kCMMetadataIdentifierError_BadKey](coremedia/kcmmetadataidentifiererror_badkey.md)
- [kCMMetadataIdentifierError_BadKeyLength](coremedia/kcmmetadataidentifiererror_badkeylength.md)
- [kCMMetadataIdentifierError_BadKeySpace](coremedia/kcmmetadataidentifiererror_badkeyspace.md)
- [kCMMetadataIdentifierError_BadKeyType](coremedia/kcmmetadataidentifiererror_badkeytype.md)
- [kCMMetadataIdentifierError_BadNumberKey](coremedia/kcmmetadataidentifiererror_badnumberkey.md)
- [kCMMetadataIdentifierError_NoKeyValueAvailable](coremedia/kcmmetadataidentifiererror_nokeyvalueavailable.md)
- [kCMMetadataIdentifierError_RequiredParameterMissing](coremedia/kcmmetadataidentifiererror_requiredparametermissing.md)

## See Also

### Constants

- [Metadata Registry Error Codes](coremedia/metadata-registry-errors.md)
- [Metadata Identifier Keyspaces](coremedia/metadata-identifier-keyspaces.md)
- [Metadata Identifiers](coremedia/metadata-identifiers.md)
- [Metadata Base Data Types](coremedia/metadata-base-data-types.md)
- [Metadata Data Types](coremedia/metadata-data-types.md)