Slot: scheme
Qualifies the kind of identifier using a URI.
URI: [oscal:scheme](https://w3id.org/lmodel/oscal/scheme)
## Applicable Classes
| Name | Description | Modifies Slot |
| --- | --- | --- |
| [DocumentId](DocumentId.md) | A document identifier qualified by an identifier scheme | yes |
| [PartyExternalId](PartyExternalId.md) | An identifier for a person or organization using a designated scheme, e | yes |
| [MetadataPartyExternalId](MetadataPartyExternalId.md) | Metadata-scoped external identifier | no |
## Properties
### Type and Range
| Property | Value |
| --- | --- |
| Range | [URIType](URIType.md) |
| Domain Of | [DocumentId](DocumentId.md), [PartyExternalId](PartyExternalId.md) |
### Cardinality and Requirements
| Property | Value |
| --- | --- |
## Identifier and Mapping Information
### Schema Source
* from schema: https://w3id.org/lmodel/oscal
## Mappings
| Mapping Type | Mapped Value |
| --- | --- |
| self | oscal:scheme |
| native | oscal:scheme |
## LinkML Source
name: scheme
description: Qualifies the kind of identifier using a URI.
from_schema: https://w3id.org/lmodel/oscal
rank: 1000
domain_of:
- DocumentId
- PartyExternalId
range: URIType