# canvas.document.save
mutation write
Use when the requested change exactly matches canvas.document.save; read the current state first when a version or identifier may have changed.
## Before calling
- Authenticate as the accountable Enhance person.
- Use only resource identifiers returned by an earlier capability result or supplied by the person.
- Reuse clientToken only when retrying this exact mutation input.
## Input
Show complete JSON Schema
```json
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"properties": {
"canvasId": {
"type": "string",
"format": "uuid",
"pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
},
"baseVersion": {
"type": "integer",
"minimum": 1,
"maximum": 9007199254740991
},
"document": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"screenIds": {
"maxItems": 2000,
"type": "array",
"items": {
"type": "string",
"format": "uuid",
"pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
}
}
},
"required": [
"canvasId",
"baseVersion",
"document",
"screenIds"
],
"additionalProperties": false
}
```
### Example
Show example input
```json
{
"canvasId": "00000000-0000-4000-8000-000000000010",
"baseVersion": 1,
"document": {
"version": 3,
"nodes": {
"root": {
"id": "root",
"label": "Canvas",
"component": "root",
"labelOrigin": "generated",
"visible": true,
"locked": false,
"styles": {}
}
},
"relationships": {},
"tombstones": {}
},
"screenIds": []
}
```
## Result
Returns a typed canvas.document.save result from the Enhance API without transport-specific prose.
## Recovery
- BAD_REQUEST: correct the named fields and call again.
- UNAUTHORIZED: restore Enhance authentication, then retry once.
- FORBIDDEN or NOT_FOUND: check the supplied resource and selection; do not substitute unrelated content. Ask for corrected access or scope if needed.
- CONFLICT: read the current resource, merge the intended change, and retry with its version.
- INTERNAL: run Enhance diagnostics, report the failure, and stop repeating the call.
## Continue with
- Read the affected canvas resource to confirm the result.
Compatibility: `085c52017941a3435c78d78a541f0e81114eef79788c53ffdb3d0ae4f3e8d0b3`.