SharePoint Site Columns - Allow multiple values in powershell script

Question

I have created a taxonomy type site column using PowerShell Script. I need to enable "Allow multiple values" property using script.

I have searched a lot. In some solutions it says it's possible while adding the column to the list. But I need that property set while creating the site column itself.

Below is the code which I used to create the site column.

 $fieldAsXML = "<Field Type='$($column.FieldType)' 
 DisplayName='$($column.DisplayName)' 
 Name='$($column.name)'     
 Group='$($column.group)'
 Required='$($column.required)'/>"

 #see tips below for info about fieldOptions
 $fieldOption = [Microsoft.SharePoint.Client.AddFieldOptions]::AddFieldInternalNameHint
 $field = $fields.AddFieldAsXML($fieldAsXML, $true, $fieldOption)
 $context.load($field)

Any help is appreciated.

Thanks.

Update:

For Taxonomy I used, Lee_MSFT's answer.

For Lookup I used, the below method:

$fieldAsXML = "<Field Type='LookupMulti' 
DisplayName='$($column.DisplayName)' 
Name='$($column.name)'     
Group='$($column.group)'
Mult='TRUE'
Required='$($column.required)' 
List='$($column.List)'
ShowField='$($column.ShowField)'/>"

For Taxonomy, we can also use Field Type='TaxonomyFieldTypeMulti' and Mult='TRUE' properties.

Answer 1

I would suggest you use Add-PnPTaxonomyField.

Connect-PNPOnline -Url https://domain.sharepoint.com/sites/Developer

Add-PnPTaxonomyField -List "MyDoc4" -DisplayName "Testa" -InternalName "Testa" -MultiValue -TermSetPath "Test|Global"