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3 changes: 2 additions & 1 deletion spec/openapi.yaml
Original file line number Diff line number Diff line change
Expand Up @@ -1303,7 +1303,8 @@ paths:
- ```destination_number``` The destination number the message should be
delivered to. This should be specified in E.164
international format. For information on E.164, please refer to http://en.wikipedia.org/wiki/E.164.
A destination number is required.
A destination number is required.
⚠️ IMDA TLS Compliance Notice: From 1 April 2026, all requests sending messages to Singapore (+65) numbers must use TLS 1.3 or higher. Requests using an older TLS version will be rejected with HTTP 422 Unprocessable Entity.

- ```format``` The format specifies which format the message will be
sent as, ```SMS``` (text message), ```MMS``` (multimedia message)
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