policies:policy.modificationinvalid

{
  "topic": "org.eclipse.ditto/the_policy_id/policies/errors",
  "headers": {
    "correlation-id": "<preserved-command-correlation-id>"
  },
  "path": "/",
  "value": {
    "status": 403,
    "error": "policies:policy.modificationinvalid",
    "message": "The Policy with ID 'org.eclipse.ditto:the_policy_id' could not be modified as the resulting Policy would be invalid.",
    "description": "There must always be at least one PolicyEntry with 'WRITE' permissions on resource 'policy:/'."
  },
  "status": 403
}