Message payload syntax - Amazon IoT Analytics
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End of support notice: On December 15, 2025, Amazon will end support for Amazon IoT Analytics. After December 15, 2025, you will no longer be able to access the Amazon IoT Analytics console, or Amazon IoT Analytics resources. For more information, visit this Amazon IoT Analytics end of support.

Message payload syntax

The field names of message payloads (data) that you send to Amazon IoT Analytics:

  • Must contain only alphanumeric characters and underscores (_); no other special characters are allowed

  • Must begin with an alphabetic character or single underscore (_).

  • Cannot contain hyphens (-).

  • In regular expression terms: "^[A-Za-z_]([A-Za-z0-9]*|[A-Za-z0-9][A-Za-z0-9_]*)$".

  • Cannot be greater than 255 characters.

  • Are case-insensitive. Fields named "foo" and "FOO" in the same payload are considered duplicates.

For example, {"temp_01": 29} or {"_temp_01": 29} are valid, but {"temp-01": 29}, {"01_temp": 29} or {"__temp_01": 29} are invalid in message payloads.