> For the complete documentation index, see [llms.txt](https://docs.internetobject.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.internetobject.org/parsing-and-errors/error-accumulation.md).

# Error Accumulation

Rather than stopping at the first problem, a conformant processor **accumulates** errors and returns them together, alongside whatever data parsed successfully. This gives authors a full picture in one pass.

## Per-object validation errors

Each record is validated independently and may contribute **zero, one, or many** errors. A failing record is marked as an error; the others are unaffected:

```ruby
~ $schema: { name: string, age: { int, max: 25 } }
---
~ James, 20    # ✓
~ Alex, 30     # ✗ invalid-range
~ Bob, 22      # ✓
```

The result contains two valid records and one error entry — not a single fatal failure.

## Per-region syntax errors

Syntax errors are accumulated per recovered region (between boundaries). One unparsable record yields one error, and parsing resumes at the next `~` or `---`.

## Partial output

Because errors are accumulated rather than thrown, the loaded result includes the records that succeeded. Consumers can render valid data and surface the error list side by side (for example, editor markers at each error's position).

## Duplicate section names

When two sections share a name, the duplicate is **automatically renamed** (`users` → `users_2` → `users_3`), so the rest of the document still loads.

## See Also

* [Error Model](/parsing-and-errors/error-model.md) · [Parser Behavior & Recovery](/parsing-and-errors/parser-behavior.md)
* [Collection Rules](/collections/collection-rules.md)


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