# Enum: RequirementLevel 




_BIDS requirement level: whether something MUST, SHOULD or MAY be present._



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URI: [tvbo_study:enum/RequirementLevel](https://w3id.org/tvbo/study/enum/RequirementLevel)

## Permissible Values
| Value | Meaning | Description |
| --- | --- | --- |
| required | None | MUST be present |
| recommended | None | SHOULD be present |
| optional | None | MAY be present |




## Slots

| Name | Description |
| ---  | --- |
| [level](../slots/level.qmd) | Whether a study MUST, SHOULD or MAY have this directory |










## Identifier and Mapping Information





### Schema Source


* from schema: https://w3id.org/tvbo/study






## LinkML Source

<details>
```yaml
name: RequirementLevel
description: 'BIDS requirement level: whether something MUST, SHOULD or MAY be present.'
from_schema: https://w3id.org/tvbo/study
permissible_values:
  required:
    text: required
    description: MUST be present.
  recommended:
    text: recommended
    description: SHOULD be present.
  optional:
    text: optional
    description: MAY be present.

```
</details>

</div>