curl --request POST \
  --url https://api2.rhombussystems.com/api/alertmonitoring/createCustomPinForLocation \
  --header 'Content-Type: application/json' \
  --header 'x-auth-apikey: <api-key>' \
  --header 'x-auth-scheme: <x-auth-scheme>' \
  --data '
{
  "description": "Custom PIN for main entrance access",
  "locationUuid": "AAAAAAAAAAAAAAAAAAAAAA",
  "name": "Custom Main Entrance PIN",
  "pin": "5678"
}
'

{
  "alreadyExists": false,
  "error": true,
  "errorMsg": "<string>",
  "warningMsg": "<string>"
}