docs/reference/fidl/language/error-catalog/_fi-0056.md

## fi-0056: Invalid reference to deprecated other platform {:#fi-0056}

This error occurs when you use a reference to a `type` or `const` from another
platform with an incompatible `@available` attribute. This typically happens
when using deprecated `types` or `consts` from later versions.

{% 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-0056-a.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}
```

```fidl
{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/bad/fi-0056-b.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}
```

To fix this error, use a non-deprecated `type` or `const`:

{% 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-0056-a.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}
```

```fidl
{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/good/fi-0056-b.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}
```