> ## Documentation Index
> Fetch the complete documentation index at: https://docs.superdoc.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# permissionRanges.updatePrincipal

> Change which principal is allowed to edit a permission range. Updates the principal fields on the start marker.

## Summary

Change which principal is allowed to edit a permission range. Updates the principal fields on the start marker.

* Operation ID: `permissionRanges.updatePrincipal`
* API member path: `editor.doc.permissionRanges.updatePrincipal(...)`
* Mutates document: `yes`
* Idempotency: `idempotent`
* Supports tracked mode: `no`
* Supports dry run: `yes`
* Deterministic target resolution: `yes`

## Expected result

Returns a PermissionRangeMutationResult with the updated range info on success.

## Input fields

| Field            | Type   | Required | Description              |
| ---------------- | ------ | -------- | ------------------------ |
| `id`             | string | yes      |                          |
| `principal`      | object | yes      |                          |
| `principal.id`   | string | no       |                          |
| `principal.kind` | enum   | yes      | `"everyone"`, `"editor"` |

### Example request

```json theme={null}
{
  "id": "id-001",
  "principal": {
    "id": "id-001",
    "kind": "everyone"
  }
}
```

## Output fields

*No fields.*

### Example response

```json theme={null}
{}
```

## Pre-apply throws

* `TARGET_NOT_FOUND`
* `INVALID_TARGET`
* `INVALID_INPUT`
* `CAPABILITY_UNAVAILABLE`

## Non-applied failure codes

* None

## Raw schemas

<Accordion title="Raw input schema">
  ```json theme={null}
  {
    "additionalProperties": false,
    "properties": {
      "id": {
        "type": "string"
      },
      "principal": {
        "additionalProperties": false,
        "properties": {
          "id": {
            "type": "string"
          },
          "kind": {
            "enum": [
              "everyone",
              "editor"
            ],
            "type": "string"
          }
        },
        "required": [
          "kind"
        ],
        "type": "object"
      }
    },
    "required": [
      "id",
      "principal"
    ],
    "type": "object"
  }
  ```
</Accordion>

<Accordion title="Raw output schema">
  ```json theme={null}
  {
    "type": "object"
  }
  ```
</Accordion>

<Accordion title="Raw success schema">
  ```json theme={null}
  {
    "type": "object"
  }
  ```
</Accordion>

<Accordion title="Raw failure schema">
  ```json theme={null}
  {
    "type": "object"
  }
  ```
</Accordion>