EventBridge alerts not working with Service Catalog

Attempted to implment EventBridge alerts that triggers an SNS notification whenever an event from Service Catalog (SC) is received/occurs. I tried the following event rules and patterns in terraform:

resource "aws_cloudwatch_event_rule" "servicecatalog_event_rule" {
  name        = "servicecatalog-rule"
  description = "Event rule to trigger SNS topic on Service Catalog events"

  event_pattern = <<EOF
  {
    "source": ["aws.servicecatalog"]
  }
  EOF
}

Pattern 2: API calls through CloudTrail (found this on the AWS management console).

{
  "source": ["aws.servicecatalog"],
  "detail-type": ["AWS API Call via CloudTrail"],
  "detail": {
    "eventSource": ["servicecatalog.amazonaws.com"]
  }
}

SNS topic is also attached to a resource-based policy. This policy worked for CodePipeline events and ECS events. I am not sure if this is enough for Service Catalog or if it needs more access:

resource "aws_sns_topic_policy" "servicecatalog_topic_policy" {
  arn = aws_sns_topic.servicecatalog_sns_topic.arn

  policy = <<EOF
{
  "Version": "2012-10-17",
  "Id": "__default_policy_ID",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "Service": "events.amazonaws.com"
      },
      "Action": "sns:Publish",
      "Resource": "${aws_sns_topic.servicecatalog_sns_topic.arn}"
    
    }
  ]
}
EOF
}

I have genereated test events by doing actions in Service Catalog but the SNS was not still getting triggered in any of the attempts. Am I missing something? Does the policy need more access or is this an issue with Service catalog? Thanks, appreciate any help.