> For the complete documentation index, see [llms.txt](https://demystifyfp.gitbook.io/fstoolkit-errorhandling/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://demystifyfp.gitbook.io/fstoolkit-errorhandling/fstoolkit.errorhandling/asyncresult/list/traverseasyncresulta.md).

# traverseAsyncResultA

### List.traverseAsyncResultA

Namespace: `FsToolkit.ErrorHandling`

Function Signature:

```
('a -> Async<Result<'b,'c>>) -> 'a list -> Async<Result<'b list, 'c list>>
```

Note that `traverse` is the same as `map >> sequence`. See also [List.sequenceAsyncResultA](/fstoolkit-errorhandling/fstoolkit.errorhandling/asyncresult/list/sequenceasyncresulta.md).

This is applicative, collecting all errors.

This is the same as [traverseResultA](broken://pages/-LO2tZXE-EIOL284Gvsi) except that it uses `Async<Result<_,_>>` instead of `Result<_,_>`.

See also Scott Wlaschin's [Understanding traverse and sequence](https://fsharpforfunandprofit.com/posts/elevated-world-4/).

### Examples