How to fetch DEFAULT LEAD TIME in Inventory Management Preferences via suitescript

Hello,

I'm writing a Scheduled SuiteScript 2.1 which would benefit by fetching the default setting, to make the script more robust rather than hardcoding it.

The setting can be found this way via UI:

SETUP > ACCOUNTING > INVENTORY MANAGEMENT PREFERENCES
"DEFAULT LEAD TIME" setting

I tried the AI search, in the unlikely event it provides an accurate answer, but no such luck.

This code snippet, generates an error:

let invmgmtPrefs = config.load({
type: config.Type.INVENTORY_MANAGEMENT_PREFERENCES
});

let defLeadTime = invmgmtPrefs.getValue({
fieldId: 'LEADTIME'
});

ERROR:

"type": "error.SuiteScriptError",
"name": "SSS_MISSING_REQD_ARGUMENT",
"message": "config.load: Missing a required argument: options.type",