Cancel Scheduled Message
Cancel a previously scheduled message before it is sent.
Use the scheduleId returned from a scheduled send request (SMS, MMS, or RCS) to cancel the message.
Once cancelled, the scheduled message will stop being sent.
Note: You cannot cancel a message that has already been sent.
Authentication
PINNACLE-API-KEYstring
API Key authentication via header
Path parameters
id
Unique identifier of the scheduled message. This identifier is a string that always begins with the prefix msg_sched_, for example: msg_sched_1234567890.
Response
Successfully cancelled the scheduled message.
success
Indicates whether the scheduled message was successfully cancelled.

