curl --request POST \
  --url https://api2.rhombussystems.com/api/policy/getPolicyAddendums \
  --header 'Content-Type: application/json' \
  --header 'x-auth-apikey: <api-key>' \
  --header 'x-auth-scheme: <x-auth-scheme>' \
  --data '{}'

{
  "deviceAddendumsMap": {},
  "error": true,
  "errorMsg": "<string>",
  "locationAddendumsMap": {},
  "warningMsg": "<string>"
}