curl --request DELETE \
  --url https://api.reply.io/v3/sequences/{id}/steps/{step_id} \
  --header 'X-API-Key: <api-key>'

{
  "title": "Validation Failed",
  "status": 349,
  "detail": "The scheduler with ID 'daily-9am' does not exist in your account",
  "errorCode": 1004
}