Error when creating the stack

[snacks-lord]

I am getting this error when creating the stack in CF.

Parameter ScheduleExpression is not valid. (Service: AmazonCloudWatchEvents; Status Code: 400; Error Code: ValidationException; Request ID: d50ae7df-e029-4be2-8755-e7ccf3701bdf)

[mrcoronel]

Could it be an issue with the schedule expression? Can you validate against https://docs.aws.amazon.com/AmazonCloudWatch/latest/events/ScheduledEvents.html#CronExpressions ?

[snacks-lord]

I did check against that page before opening this issue and it looked right to me.

I also used the example in the instructions to start from. Does this not look right?

`		"BackupInterval": {
			"Type": "Number",
			"Default": "3",
			"Description": "Interval for backups in hours. Default is 24"
...
		"BackupSchedule": {
			"Type": "String",
			"Default": "0 0 3 6 9 12 15 18 21 * * ? *",
			"Description": "Backup schedule in Cloudwatch Event cron format. Needs to run at least once for every Interval. The default value runs once every at 1AM UTC. More information: http://docs.aws.amazon.com/AmazonCloudWatch/latest/events/ScheduledEvents.html"
		},
`

[mrcoronel]

I am assuming you'd like to run it on those hours.
If that is the case, I believe "0 0,3,6,9,12,15,18.21 * * ? *" should work