Steps to reproduce the issue

1)Create a Content Field of type List called "mylistfield" (for example) with values and activate the multiple option.
1)Create an Article and in the Fields Tab, enter two values in "mylistfield".
1)Call with the API to the created ID article {{base_url}}/{{base_path}}/content/articles/{{your article id}} with Postman

Expected result

The field shows two values:
"mylistfield": [
{
"value": "Value 1",
"alias": "value-1"
},
{
"value": "Value 2",
"alias": "value-2"
},
],

Actual result

            "mylistfield": []

System information (as much as possible)

Joomla 4.2.2
Php 7.4

Additional comments

This code should work. I am not sure if it should be plain or associative array.

    $api_values = array();
    foreach ($field->rawvalue as $value) {
        if (isset($options[$value])) {
            //$api_values[$value => $options[$value]];
            $api_values[] = array(
                'value' => $options[$value],
                'alias' => $value
            );             
        }
    }

    $field->apivalue = $api_values;