API Call for device configuration

API Call for device configuration

curl --location 'https://myserver.net/api/json/v2/ncmdevice/getCurrentConfig?apiKey=myapikey&deviceId=2661'

I can pull the device list and and a few other items but trying to pull the current device configuration fails with a 404 error.  Anyone able to pull their device configurations or other information reliably from NCM?