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

# Observe errors, pagination and limits

> Handle Observe API failures, endpoint-specific paging and busy responses.

Check the HTTP status and the error response documented on each endpoint. Correct invalid requests before retrying them.

| Status | What to check                                                                                                                            |
| ------ | ---------------------------------------------------------------------------------------------------------------------------------------- |
| `400`  | Required fields, field formats and endpoint-specific filter constraints                                                                  |
| `401`  | Missing, invalid or expired API key, a source IP outside the key's allow list or a missing permission; the error message names the cause |
| `403`  | A feature that is not enabled for the project, or SDK collection from an origin that is not authorized                                   |
| `404`  | Resource ID and the project selected by the API key                                                                                      |
| `429`  | Concurrency or capacity limits; honor `Retry-After` when present                                                                         |
| `5xx`  | A server or delivery failure; retry reads with backoff                                                                                   |

Before retrying a write, determine whether the first request took effect. In particular, check export or deletion job status when you already have a job ID.

## Pagination

Pagination is endpoint-specific. Paged lists can return `X-Corbado-Page`, `X-Corbado-TotalPages` and `X-Corbado-TotalItems`. Search endpoints can instead use a limit and time or identifier filters. Follow the selected endpoint's parameters and response headers; do not assume every search returns page counts.

## Busy responses and exports

Time-series and funnel reads can return `429` with `Retry-After` when capacity is temporarily unavailable. Wait for the indicated delay before retrying.

A project can run two time-series exports concurrently. [Creating an export](/api-reference/observe/create-time-series-export) streams progress over the request; keep the connection open until completion or failure. After a disconnect, inspect the export status before starting it again.

Use the [export guide](/corbado-observe/data-access/exports) for supported intervals, date ranges and download behavior.