docs/reference/fidl/language/error-catalog/_fi-0074.md

## fi-0074: Invalid layout used for method payload {:#fi-0074}

Only `struct`, `table`, or `union` layouts may be used to describe method
payloads:

{% include "docs/reference/fidl/language/error-catalog/label/_bad.md" %}

```fidl
{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/bad/fi-0074.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}
```

Use one of those layouts instead:

{% include "docs/reference/fidl/language/error-catalog/label/_good.md" %}

```fidl
{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/good/fi-0074.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}
```