> ## Documentation Index
> Fetch the complete documentation index at: https://tally.wharflab.com/llms.txt
> Use this file to discover all available pages before exploring further.

# powershell/PSAvoidMultipleTypeAttributes

> Avoid multiple type specifiers on parameters.

`powershell/PSAvoidMultipleTypeAttributes` is a PSScriptAnalyzer diagnostic emitted by tally for PowerShell snippets embedded in Dockerfiles.

| Property | Value            |
| -------- | ---------------- |
| Severity | Warning          |
| Category | PSScriptAnalyzer |
| Auto-fix | No               |

## Description

Parameters should not have more than one type specifier. Multiple type specifiers on parameters
can cause runtime errors.

## How

Ensure each parameter has only 1 type specifier.

## Examples

### Problematic code

```powershell theme={null}
function Test-Script
{
    [CmdletBinding()]
    Param
    (
        [switch]
        [int]
        $Switch
    )
}
```

### Correct code

```powershell theme={null}
function Test-Script
{
    [CmdletBinding()]
    Param
    (
        [switch]
        $Switch
    )
}
```

## Source

This rule documentation is adapted from Microsoft's PSScriptAnalyzer documentation for
[AvoidMultipleTypeAttributes](https://github.com/MicrosoftDocs/PowerShell-Docs-Modules/blob/main/reference/docs-conceptual/PSScriptAnalyzer/Rules/AvoidMultipleTypeAttributes.md),
licensed under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/).