JMA

Version 2.8.2

Oct 17, 2026

API version: 11.0.1

A tag value is a timestamp only in ISO 8601 form, as documented: it must start with a yyyy-MM-dd date. Other text that .NET reads as a date is a string now. A version like Version=1.7.0 was taken for 2000-01-07 and rejected with 400 “Detected timestamp without defining time zone”, as were values like 2.8.1, 10/16/2026, Jan 2026 or 4/3. With a Z or an offset, such a value was stored as a timestamp instead. Versions starting with 0. were not affected. A typed query value {timestamp:...} follows the same rule and rejects any other value as an invalid timestamp. Tag value types also no longer depend on the server’s culture. Tags already stored keep their type. Present since 20260130.205.