Cannot determine what property value is empty? - json

Question

When running AWS CloudFormation with the below template(part of a pre-existing nested stack), I am getting a failure that "Property Value cannot be empty." for both of the lambda items I am trying to create CloudWatch alarms for. I have tried to run it as part of the nested stack as well as the template by itself to no avail. Can anyone offer any insight?
{
"AWSTemplateFormatVersion": "2010-09-09",
"Description": "Creation of CloudWatch Alarms",
"Resources": {
"CLFirstLambdaAlarm": {
"Type": "AWS::CloudWatch::Alarm",
"Properties": {
"AlarmName": "CLFirstLambdaErrors",
"AlarmDescription": "Alarms when an error occurs on the first lambda",
"AlarmActions": [{ "Ref": "AlarmNotificationTopic" }],
"MetricName": "Errors",
"Namespace": "AWS/Lambda",
"Dimensions": [{
"Name": "first-lambda"
},
{
"Value": { "Fn::ImportValue": "CLFirstLambda" }
}
],
"ComparisonOperator": "GreaterThanOrEqualToThreshold",
"EvaluationPeriods": "1",
"Period": "60",
"Unit": "Count",
"Statistic": "Sum",
"Threshold": "1",
"TreatMissingData": "notBreaching"
}
},
"CLSecondLambdaAlarm": {
"Type": "AWS::CloudWatch::Alarm",
"Properties": {
"AlarmName": "CLSecondLambdaErrors",
"AlarmDescription": "Alarms when an error occurs on the second lambda",
"AlarmActions": [{ "Ref": "AlarmNotificationTopic" }],
"MetricName": "Errors",
"Namespace": "AWS/Lambda",
"Dimensions": [{
"Name": "second-lambda"
},
{
"Value": { "Fn::ImportValue": "CLSecondLambda" }
}
],
"ComparisonOperator": "GreaterThanOrEqualToThreshold",
"EvaluationPeriods": "1",
"Period": "60",
"Unit": "Count",
"Statistic": "Sum",
"Threshold": "1",
"TreatMissingData": "notBreaching"
}
},
"AlarmNotificationTopic": {
"Type": "AWS::SNS::Topic",
"Properties": {
"TopicName": "cl-alarm-topic",
"Subscription": [{
"Endpoint": "me#domain.com",
"Protocol": "email"
}]
}
}
},
"Outputs": {
"AlarmNotificationTopicArn": {
"Description": "ARN of AlarmNotificationTopic",
"Value": { "Ref" : "AlarmNotificationTopic" },
"Export": { "Name" : "AlarmNotificationTopic" }
}
}
}

Answer 1

The CloudFormation Linter gives more detailed error messages:
E3003 Property Value missing at Resources/CLFirstLambdaAlarm/Properties/Dimensions/0
template.json:13:30
E3003 Property Name missing at Resources/CLFirstLambdaAlarm/Properties/Dimensions/1
template.json:16:19
E3003 Property Value missing at Resources/CLSecondLambdaAlarm/Properties/Dimensions/0
template.json:37:30
E3003 Property Name missing at Resources/CLSecondLambdaAlarm/Properties/Dimensions/1
template.json:40:19
AWS::CloudWatch::Alarm
AWS::CloudWatch::Alarm.Dimension
Try these AWS::CloudWatch::Alarm.Dimensions properties instead:
"Dimensions": [{
"Name": "first-lambda",
"Value": { "Fn::ImportValue": "CLFirstLambda" }
}
],
"Dimensions": [{
"Name": "second-lambda",
"Value": { "Fn::ImportValue": "CLSecondLambda" }
}
],