docs/reference/fidl/language/error-catalog/_fi-0133.md

## fi-0133: Attribute argument must be literal {:#fi-0133}

Certain [official attributes](/docs/reference/fidl/language/attributes.md) do
not allow arguments that are references to constants:

{% 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-0133.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}
```

Instead, pass a literal value as the argument:

{% 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-0133.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}
```

These attributes require a literal argument because their values influence
compilation. Supporting non-literal arguments would be difficult to implement,
or in some cases impossible because it leads to contradictions.