Slot: missing_values
Source values to treat as missing and emit as null instead of the literal value — e.g. sentinel codes like -9, 99, or 999 meaning "not collected". Accepts a single value or a list.
URI: [linkmlmap:missing_values](https://w3id.org/linkml/transformer/missing_values)
## Applicable Classes
| Name | Description | Modifies Slot |
| --- | --- | --- |
| [SlotDerivation](SlotDerivation.md) | A specification of how to derive the value of a target slot from a source slo... | no |
## Properties
### Type and Range
| Property | Value |
| --- | --- |
| Range | [Any](Any.md) |
| Domain Of | [SlotDerivation](SlotDerivation.md) |
### Cardinality and Requirements
| Property | Value |
| --- | --- |
| Multivalued | Yes |
### Slot Characteristics
| Property | Value |
| --- | --- |
| Owner | [SlotDerivation](SlotDerivation.md) |
## Identifier and Mapping Information
### Schema Source
* from schema: https://w3id.org/linkml/transformer
## Mappings
| Mapping Type | Mapped Value |
| --- | --- |
| self | linkmlmap:missing_values |
| native | linkmlmap:missing_values |
## LinkML Source
name: missing_values
description: Source values to treat as missing and emit as null instead of the literal
value — e.g. sentinel codes like -9, 99, or 999 meaning "not collected". Accepts
a single value or a list.
from_schema: https://w3id.org/linkml/transformer
rank: 1000
owner: SlotDerivation
domain_of:
- SlotDerivation
range: Any
multivalued: true