{
  "guide": "find-measurement-id",
  "checked": "2026-11-11",
  "measurement_id": {
    "prefix": "G-",
    "characters_after_prefix": 10,
    "total_length": 12,
    "recomputed": "2 + 10 = 12",
    "example_placeholder": "G-XXXXXXXXXX",
    "placeholder_length": 12
  },
  "location": "Admin > Data streams > stream name > Stream details",
  "role_required": "Editor or above at the property level",
  "no_stream_message": "Choose a platform \u2014 add a data stream first",
  "rule": "copy from the stream details page; never type from memory"
}