Slot: id_ref
Identifier reference of a source/target subject.
URI: [oscal:id_ref](https://w3id.org/lmodel/oscal/id_ref)
Alias: id_ref
## Applicable Classes
| Name | Description | Modifies Slot |
| --- | --- | --- |
| [MappingItem](MappingItem.md) | A source or target item participating in a mapping entry | yes |
## Properties
### Type and Range
| Property | Value |
| --- | --- |
| Range | [String](String.md) |
| Domain Of | [MappingItem](MappingItem.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:id_ref |
| native | oscal:id_ref |
## LinkML Source
name: id-ref
description: Identifier reference of a source/target subject.
from_schema: https://w3id.org/lmodel/oscal
rank: 1000
alias: id_ref
domain_of:
- MappingItem
range: string