[Solved] You wrote this CloudWatch Events rule JSON snippet:{"EventPattern": {"source": ["aws.ec2"]}, "Targets": [{"Arn":... | AWS

AWS - CloudWatch

You wrote this CloudWatch Events rule JSON snippet:

{"EventPattern": {"source": ["aws.ec2"]}, "Targets": [{"Arn": "arn:aws:sns:us-east-1:123456789012:MyTopic"}]}

Why might this rule fail to trigger the SNS topic?

AIncorrect event source name

BMissing "Id" field in the target definition

CSNS topics cannot be targets

DEventPattern must be a string, not an object

Step-by-Step Solution

Solution:

Step 1: Check target configuration requirements
Each target in EventBridge must have an "Id" field to identify it.
Step 2: Identify missing "Id" in the target
The target JSON lacks the required "Id" field, causing failure.
Final Answer:
Missing "Id" field in the target definition -> Option B
Quick Check:
Targets need "Id" field to work [OK]

Quick Trick: Always include "Id" for each target in EventBridge rules [OK]

Common Mistakes:

MISTAKES

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You wrote this CloudWatch Events rule JSON snippet: