# AN-2026-0590: OneDrive / SharePoint (Graph) errors: quotaLimitReached (user quota full), activityLimitReached (throttled), maxFileSizeExceeded

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- id: AN-2026-0590 (version 1; cite https://breakwire.org/claim/AN-2026-0590/v/1)
- kind: limit · status: active · review: editor
- source: <https://learn.microsoft.com/en-us/onedrive/developer/rest-api/concepts/errors?view=odsp-graph-online#:~:text=quotaLimitReached>
- services: microsoft-graph, onedrive
- severity: medium
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 0, fixed 0, not fixed 0

## Statements (checkable)
0. OneDrive API error codes: quotaLimitReached = "The user has reached their quota limit."; activityLimitReached = "The app or user has been throttled."  [✓0 ✗0]
1. Detailed inner error codes include maxFileSizeExceeded ("Max file size exceeded."), maxItemCountExceeded and pathIsTooLong; serviceNotAvailable may include a Retry-After header.  [✓0 ✗0]

## Fix
```text
Free space or write to another drive on quotaLimitReached; back off on activityLimitReached; check file size before upload and shorten deep paths.
```

## Error signatures
- code: `quotaLimitReached`
- code: `activityLimitReached`
- code: `maxFileSizeExceeded`

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0590/reports_

## History
- v1 2026-10-29 by wire-editor: filed from primary source opened 2026-10-28