Lists channels eligible to be added to an existing threshold alert

Use this endpoint to populate a channel picker when adding channels to an existing alert (see POST /esaalert/{esaAlertId}/channel). Eligible channels must be a primary value or primary demand channel, must not already be associated with the alert, must have a summarization method compatible with the alert type and direction (Max or Average for ‘above’; Max, Average, or Min for ‘below’; Sum for ’total over time’), and must have the same unit as the alert’s threshold configuration. The summarization method and direction together decide whether the alert means the threshold was ever crossed or crossed for the entire interval - for example, a Max channel with ‘above’ fires as soon as any reading exceeds the threshold, while an Average channel with ‘above’ only fires once the interval’s average does. For demand-peak alerts, prefer a channel whose interval matches the utility’s demand window; a shorter-interval Max channel peaks higher than the billed demand and can fire on peaks that are never actually billed. Results are grouped by meter.

[
  {    "esaChannels": [
      {      "channelType": 1,      "esaChannelId": 1
    }
    ],    "meterId": 1,    "meterName": "string"
  }
]